Words That Rhyme With "Gratuity" :
3 syllables:
4 syllables:
acuity, annuity, circuity, congruity, fatuity, fortuity, tenuity, vacuity
5 syllables:
ambiguity, assiduity, conspicuity, contiguity, continuity, exiguity, incongruity, ingenuity, innocuity, perpetuity, perspicuity, promiscuity, superfluity