while

An uncertain duration of time, a period of time.

He lectured for quite a long while.

It’s a long while since anyone lived there, so it’s a ruin now.

An uncertain duration of time, a period of time.

An uncertain duration of time, a period of time.

During the same time that.

He was sleeping while I was singing.

Driving while intoxicated is against the law.

Although.

This case, while interesting, is a bit frustrating.

While I would love to help, I am very busy at the moment.

Until.

I'll wait while you've finished painting.

To dark is still used in Swaledale (Yorkshire) in the sense of to lie hid, as, 'Te rattens [rats] mun ha bin darkin whel nu [till now]; we hannot heerd tem tis last fortnith'.

As long as.

While you're at school you may live at home.

While there's quiet I can sleep.

Until.

I may be conveyed into your chamber; I'll lie under your bed while midnight.