forever

[ fawr-ev-er, fer- ]
/ fɔrˈɛv ər, fər- /

adverb

without ever ending; eternally: to last forever.
continually; incessantly; always: He's forever complaining.
lasting for an endless period of time: the process of finding a forever home for the dog.

noun

an endless or seemingly endless period of time: It took them forever to make up their minds.

Idioms for forever

    forever and a day, eternally; always: They pledged to love each other forever and a day.

Origin of forever

First recorded in 1300–50; orig. phrase for ever

British Dictionary definitions for forever and a day

forever
/ (fɔːˈrɛvə, fə-) /

adverb

Also: for ever without end; everlastingly; eternally
at all times; incessantly
informal for a very long time he went on speaking forever

noun

(as object) informal a very long time it took him forever to reply
…forever! an exclamation expressing support or loyalty Scotland forever!

usage for forever

Forever and for ever can both be used to say that something is without end. For all other meanings, forever is the preferred form

Idioms and Phrases with forever and a day

forever and a day

1

For a very long time, as in He's been working on that book forever and a day. This hyperbolic expression probably originated as a corruption of the now obsolete for ever and ay. Shakespeare used it in The Taming of the Shrew (4:4): “Farewell for ever and a day.” Today it is mainly a substitute for “very long time.” [c. 1600]

2

Incessantly, ceaselessly, as in Will this racket never end? It's been going on forever and a day. [Colloquial; first half of 1900s]