Unfamiliarity rhymes with:
familiarity, familiarity, familiarity, familiarity, familiarity, familiarity, celerity, clarity, dexterity, disparity, familiarity, geraghty, hilarity, irregularity, parity, peculiarity, polarity, popularity, posterity, prosperity, rarity, regularity, similarity, sincerity, solidarity, temerity, verity