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