loathsome
adj.extremely unpleasant or disgusting. You use this to describe something that makes you feel very strong feelings of hate or disgust.
adj.extremely unpleasant, disgusting, or repulsive. Often used to describe people, behaviors, or physical objects that evoke intense aversion.
“The smell of the old trash was loathsome.”
“The politician's loathsome behavior during the debate made it impossible for the committee to consider his proposal.”
“The novel's protagonist is a loathsome figure, whose every action is driven by a selfish desire for power that alienates even his most loyal followers.”
“The press were characteristically loathsome in their probing.”
“Scott’s disinterest in retiring is admirable (he’s openly loathsome of the idea), I just wish he seemed more interested in the day job.”
From Middle English lothsum, from Old English lāþsum, from Proto-West Germanic laiþasam, equivalent to loath + -some. Cognate with Middle Low German lêtsam (“arduous”), German leidsam (“sad, sorry”).
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.