Words That Rhyme With "Fictitious" :

2 syllables:

vicious

3 syllables:

ambitious, auspicious, capricious, delicious, factitious, flagitious, judicious, lubricious, malicious, nutritious, officious, pernicious, propitious, pumiceous, seditious, sericeous, siliceous, silicious, spadiceous, suspicious

4 syllables:

adscititious, adventitious, avaricious, cementitious, cineritious, expeditious, injudicious, inofficious, lateritious, obreptitious, repetitious, subreptitious, superstitious, suppositious, surreptitious, unpropitious, unsuspicious

5 syllables:

artifactitious, excrementitious, holosericeous, supposititious