Find the word definition

Wiktionary
long since

adv. (context idiomatic English) long ago; in the (distant) past.

WordNet
long since

adv. of the distant or comparatively distant past; "We met once long ago"; "they long ago forsook their nomadic life"; "left for work long ago"; "he has long since given up mountain climbing"; "This name has long since been forgotten"; "lang syne" is Scottish [syn: long ago, lang syne]

Usage examples of "long since".

The awful, interminable flapping of their wings, the ceaseless tempo of their movement, had long since dulled her mind to any chance of potential rescue.

He knew that everyonemost especially the lady he had loved more than his own lifefor whom he had held any degree of affection had long since ceased to exist.