WikiRhymer has about 1,000 rhyming words and phrases for "oats" starting with...

boat's
    boats
      coat's
        coats
          cotes
            floats
              gloats
                goat's
                  goats
                    moats
                      motes
                        note's
                          notes
                            quotes
                              throats
                                totes
                                  vote's
                                    votes
                                      connotes
                                        denotes
                                          devotes
                                            promotes
                                              Capote's
                                                Oates
                                                  • a rising tide lifts all boats
                                                  • burn one's boats
                                                  • separate the sheep from the goats
                                                  • compare notes
                                                  • at each other's throats
                                                  Pure Rhyme Set #1 of 1 (Add to/Edit Set Members)
                                                  Words that have a pure rhyme on their last syllable only.
                                                  raincoat's
                                                    raincoats
                                                      End Rhyme Set #1 of 2 (Add to/Edit Set Members)
                                                      coyotes
                                                        showboat's
                                                          salt oats
                                                            salt coats
                                                              footnotes
                                                                scrap quotes
                                                                  love quotes
                                                                    bear quotes
                                                                      banknotes
                                                                        tugboats
                                                                          gunboats
                                                                            lifeboats
                                                                              redcoats
                                                                                airboats
                                                                                  take notes
                                                                                    sailboats
                                                                                      scapegoats
                                                                                        speedboats
                                                                                          steamboats
                                                                                            c notes
                                                                                              overcoats
                                                                                                petticoats
                                                                                                  asymptotes
                                                                                                    asymptotes
                                                                                                      anecdotes
                                                                                                        anecdotes
                                                                                                          ferryboats
                                                                                                            riverboats
                                                                                                              End Rhyme Set #2 of 2 * (Add to/Edit Set Members)
                                                                                                              Words that "almost" rhyme on the vowel-based rhyme sound of the stressed syllable like: be/eat or maybe/shapely. (Click for more info)
                                                                                                              growths
                                                                                                                oaths
                                                                                                                  Near Rhyme Set #1 of 51 (Add to/Edit Set Members)
                                                                                                                  bolts
                                                                                                                    colt's
                                                                                                                      colts
                                                                                                                        holts
                                                                                                                          jolts
                                                                                                                            volts
                                                                                                                              revolts
                                                                                                                                Goltz
                                                                                                                                  Holt's
                                                                                                                                    Holtz
                                                                                                                                      Voltz
                                                                                                                                        • bucket of bolts
                                                                                                                                        • nuts and bolts
                                                                                                                                        Near Rhyme Set #2 of 51 (Add to/Edit Set Members)
                                                                                                                                        boasts
                                                                                                                                          bowse
                                                                                                                                            close
                                                                                                                                              coasts
                                                                                                                                                dos
                                                                                                                                                  dose
                                                                                                                                                    ghosts
                                                                                                                                                      gros
                                                                                                                                                        gross
                                                                                                                                                          hosts
                                                                                                                                                            los
                                                                                                                                                              most
                                                                                                                                                                posts
                                                                                                                                                                  toasts
                                                                                                                                                                    arkose
                                                                                                                                                                      engross
                                                                                                                                                                        morose
                                                                                                                                                                          diagnose
                                                                                                                                                                            grandiose
                                                                                                                                                                              Grosz
                                                                                                                                                                                Lohse
                                                                                                                                                                                  • draw to a close
                                                                                                                                                                                  • bring to a close
                                                                                                                                                                                  • at the most
                                                                                                                                                                                  Near Rhyme Set #3 of 51 (Add to/Edit Set Members)

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                                                                                                                                                                                  Rhymes made up of more than one word. For instance, "jealous" and "tell us" or "shaky" and "make me."

                                                                                                                                                                                  No mosaic rhymes for one-syllable words.