WikiRhymer has about 200 rhyming words and phrases for "foolish" starting with...

ghoulish
    Pure Rhyme Set #1 of 1 (Add to/Edit Set Members)
    Words that have a pure rhyme on their last syllable only.
    bluish
      newish
        Jewish
          End Rhyme Set #1 of 40 (Add to/Edit Set Members)
          jewfish
            blue fish
              End Rhyme Set #2 of 40 (Add to/Edit Set Members)
              goldfish
                gold fish
                  End Rhyme Set #3 of 40 (Add to/Edit Set Members)

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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)
                  bluish
                    newish
                      Jewish
                        Near Rhyme Set #1 of 3 (Add to/Edit Set Members)
                        jewfish
                          blue fish
                            Near Rhyme Set #2 of 3 (Add to/Edit Set Members)
                            prudish
                              goosefish
                                brutish
                                  you wish
                                    tuna fish
                                      Near Rhyme Set #3 of 3 * (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."
                                      • bamboo + dish
                                      • bamboo + fish
                                      • blue + dish
                                      • blue + fish
                                      • do + fish
                                      • do + wish
                                      • drew + fish
                                      • du + wish
                                      • few + fish
                                      • few + wish
                                      • into + dish
                                      • into + fish
                                      • into + Trish
                                      • Jew + fish
                                      • Jew + ish
                                      • knew + fish
                                      • lew + ish
                                      • new + dish
                                      • new + fish
                                      • new + wish
                                      • ou + wish
                                      • threw + fish
                                      • through + fish
                                      • through + wish
                                      • to + dish
                                      • to + fish
                                      • to + ish
                                      • to + Kish
                                      • to + lish
                                      • to + squish
                                      • to + swish
                                      • to + Tish
                                      • to + Trish
                                      • to + wish
                                      • too + wish
                                      • true + fish
                                      • true + wish
                                      • two + dish
                                      • two + fish
                                      • two + wish
                                      • u + ish
                                      • u + wish
                                      • view + fish
                                      • who + dish
                                      • who + fish
                                      • who + ish
                                      • who + wish
                                      • you + dish
                                      • you + fish
                                      • you + ish
                                      • you + squish
                                      • you + swish
                                      • you + Trish
                                      • you + wish
                                      Mosaic Rhyme Set #1 of 1 (Add to/Edit Set Members)