Here's what rhymes with inefficatious.
gracious efficacious audacious fallacious herbaceous sebaceous vivacious salacious spacious tenacious capacious vexatious voracious ungracious flirtatious loquacious mendacious ostentatious Words that almost rhyme with inefficatious
cases basis gazes faces bases phases races raises vases laces chases glazes mesas places phrases spaces traces praises braces fireplaces metastases homeostasis paraphrases 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 misstatements displacements disadvantageous complainants complaisance emplacements entertainments replacements rearrangements