Words that have identical vowel-based rhyme sounds in the tonic syllable. Moreover, that tonic syllable must start with a different consonantal sound.
There are none pure rhymes for "Gadsden".
Words that have a pure rhyme on their last syllable only.
gladden
    hadden
      hadn't
        sadden
          Fadden
            Haddon
              Madden
                McFadden
                  McFaddin
                    McSpadden
                      Nevadan
                        adman
                          admen
                            madmen
                              Badman
                                Cadman
                                  Radman
                                    Ladson
                                      Madsen
                                        Madson

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                                          Words that "almost" rhyme on the vowel-based rhyme sound of the stressed syllable like: be/eat or maybe/shapely. (Click for more info)
                                          gladden
                                            hadden
                                              hadn't
                                                sadden
                                                  Fadden
                                                    Haddon
                                                      Madden
                                                        McFadden
                                                          McFaddin
                                                            McSpadden
                                                              Nevadan
                                                                adman
                                                                  admen
                                                                    madmen
                                                                      Badman
                                                                        Cadman
                                                                          Radman
                                                                            Ladson
                                                                              Madsen
                                                                                Madson

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                                                                                  Rhymes made up of more than one word. For instance, "jealous" and "tell us" or "shaky" and "make me."
                                                                                  Words that rhyme on the vowel-based rhyme sound of the last syllable only (for instance: “maybe” and “eat”). Near End Rhymes generally (but not always!) suck. Nonetheless, we provide them for you just in case you may find something useful.
                                                                                  period's
                                                                                    periods
                                                                                      aphids
                                                                                        desmids
                                                                                          fluids
                                                                                            hatreds
                                                                                              hundreds
                                                                                                hybrids
                                                                                                  liquids
                                                                                                    methods
                                                                                                      orchids
                                                                                                        rapids
                                                                                                          solids
                                                                                                            synod's
                                                                                                              earbuds
                                                                                                                arachnids
                                                                                                                  bicuspids
                                                                                                                    coloreds
                                                                                                                      invalids
                                                                                                                        Dillard's
                                                                                                                          Likud's
                                                                                                                            Muhammad's
                                                                                                                              Pleiads
                                                                                                                                United's
                                                                                                                                  Harrod's
                                                                                                                                    Harrods

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