(colloquial, often humorous, rhetorical question) Used as a response to a question such as "How long will it take?" or "How big is it?" when the length or size is unknown, infinite, variable, or relative.

A hippie anti-war slogan encouraging love and peace.

The practice of sexual intercourse without the restraints of marriage or commitment.

(idiomatic) After a very long time; eventually; over a long period of time; more generally.

(no longer productive) Action or proceeding, practice, ritual

(idiomatic) To be adequate or helpful for a significant amount of time. / (idiomatic) To achieve considerable success.

That operates, moves or takes place at less than normal speed.

plural of long off

plural of long hop

plural of long on