unsusceptible
131unreturnable — Synonyms and related words: changeless, constant, immutable, incommutable, inconvertible, indefeasible, inert, insusceptible of change, intransmutable, invariable, irretrievable, irreversible, irrevocable, lasting, noble, nonreturnable,… …
132unsympathetic — Synonyms and related words: affectless, anesthetized, arctic, autistic, blunt, bowelless, callous, catatonic, chill, chilly, cold, cold as charity, cold blooded, coldhearted, cool, cruel, disagreeable, disinterested, dislikable, dispassionate,… …
