Here's what rhymes with efiicacious.
gracious spacious efficacious audacious capacious herbaceous tenacious fallacious sebaceous vexatious vivacious voracious ungracious flirtatious loquacious salacious mendacious ostentatious Words that almost rhyme with efiicacious
cases basis gazes faces bases phases races raises vases laces chases glazes mesas places phrases spaces traces praises braces homeostasis fireplaces paraphrases metastases famous patience courageous cadence heinous patients greatness nameless valence faithless hiatus painless sameness shameless shapeless waitress bailiffs baseless faceless lateness plainness fracas graceless weightless payments impatience stainless claimants contagious outrageous abeyance blameless tasteless faintness ignoramus quaintness acquaintance conveyance surveillance fragrance platelets reagents assailants pavements basements mandamus repayments vagrants inpatients straightness arrangements statements advantageous engagements attainments placements strangeness replacements complainants complaisance rearrangements entertainments disadvantageous emplacements misstatements displacements