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