Serenity rhymes with:
amenity, affinity, alkalinity, amenity, community, conaty, dignity, disunity, divinity, eternity, femininity, fraternity, gaynatie, immunity, indemnity, indignity, infinity, inhumanity, insanity, masculinity, mcginnity, modernity, opportunity, profanity, salinity, sanity, solemnity, trinity, unity, vanity, vicinity
Serenity sounds like:
sacrament, sacramento, sarant, sarmento, sarmiento, schrandt, scorned, screamed, screened, serenade, serenaded, serranto, shoehorned, sorento, sorrenti, surmount, surmounted, surround, surrounded, swarmed