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