Synonyms: annoy, irritate
Rankle Sentence: The habit of her husband to smoke in the bathroom rankles her.
Under The Lens: Rankle Etymology
Rankle comes from draoncle which means pus forming sore. Draoncle itself comes from dracunculus (little snake). So the relation is irritation caused due to an ulcer caused by snake bite. Thus rankle is etymologically a stronger word than its synonyms and is used to suggest persistent irritation or deep resentment.