Here's what rhymes with thetase.
hiatus Words that almost rhyme with thetase
ages pages stages wages courageous gauges gages pesetas outrageous cicadas contagious advantageous disadvantageous famous anus heinous basis spacious valence aimless faithless sameness shameless shapeless waitress faceless faintness lateness ageless fracas weightless patience gracious greatness stainless nameless audacious fallacious herbaceous painless sebaceous tasteless vivacious voracious bailiffs baseless plainness salacious straightness patients agents statements payments ancients surveillance ailments cadence efficacious fragrance platelets tenacious abeyance assailants blameless capacious vexatious vagrants flirtatious graceless quaintness acquaintance conveyance impatience claimants pavements strangeness basements mandamus ungracious ignoramus loquacious mendacious arrangements attainments reagents ostentatious placements repayments inpatients misstatements engagements homeostasis complaisance displacements replacements complainants rearrangements emplacements entertainments