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