What rhymes with dust - 1 syllable
 bused
 bussed
 bust
 crust
 cussed
 fussed
 fust
 gust
 hust
 just
 lust
 must
 rust
 thrust
 trust

What rhymes with dust - 2 syllables
 adjust
 combust
 discussed
 disgust
 distrust
 encrust
 entrust
 incrust
 mistrust
 nonplussed
 robust
 unjust

What rhymes with dust - 3 syllables
 antitrust
 readjust
 unadjust