Dissimilar is a related term of repugnant.
As adjectives the difference between dissimilar and repugnant
is that dissimilar
is not similar; unlike; different while repugnant
As a verb repugnant is
Offensive or repulsive; arousing disgust or aversion.
(legal) Opposed or in conflict.
* Nouns to which "repugnant" is often applied: act, nature, behavior, practice, character, thing, crime.