Here's what rhymes with unacquaintance.
acquaintance Words that almost rhyme with unacquaintance
quaintness patience cadence valence heinous painless waitress faintness weightless grayness greyness basis patients famous arrangements payments gracious greatness courageous stainless attainments claimants fragrance abeyance faithless hiatus pavements sameness shapeless tasteless bailiffs baseless basements faceless lateness plainness vagrants graceless tailless tameness statements conveyance impatience spacious surveillance nameless platelets reagents assailants audacious capacious herbaceous placements shameless mandamus ungracious fracas loquacious engagements contagious efficacious entertainments outrageous tenacious blameless fallacious sebaceous strangeness vexatious vivacious voracious complainants complaisance rearrangements repayments ignoramus inpatients mendacious misstatements salacious straightness complacence humaneness inhalants intranets profaneness advantageous replacements ostentatious emplacements flirtatious farinaceous periphrasis displacements elaborateness perspicacious homeostasis deliberateness disadvantageous disputatious