off

In a direction away from the speaker or other reference point.

He drove off in a cloud of smoke.

No matter how early I came down, I would find him on the veranda, smoking cigarettes, or[…]. And at last I began to realize in my harassed soul that all elusion was futile, and to take such holidays as I could get, when he was off with a girl, in a spirit of thankfulness.

Into a state of non-operation or non-existence.

Please switch off the light when you leave.

The dinosaurs died off long ago.

So as to remove or separate, or be removed or separated.

He bit off the end of the carrot.

Some branches were sawn off.

Offstage.

noises off

Used in various other ways specific to individual idiomatic phrases, e.g. bring off, show off, put off, tell off, etc. See the entry for the individual phrase.

Inoperative, disabled.

All the lights are off.

Cancelled; not happening.

The party's off because the hostess is sick.

Not fitted; not being worn.

Your feet will feel better once those tight boots are off.

The drink spilled out of the bottle because the top was off.

Denoting something faulty, unsatisfactory, objectionable etc.

This calculation is off: the numbers don't add up.

Is it right to say 'the amount of cars'? It sounds off to me.

Denoting something faulty, unsatisfactory, objectionable etc.

I felt that his comments were a bit off.

Not positioned upon, or away from a position upon.

He's off the roof now.

I took it off the table.

Detached, separated, excluded or disconnected from; away from a position of attachment or connection to.

The phone is off the hook

The coat fell off the peg.

Outside the area or region of.

The suspect is now believed to be off the campus.

I couldn't see what it said because the line of text ran off the page.

Temporarily not attending (a usual place), especially owing to illness or holiday.

off work; off school

Used to indicate the location or direction of one thing relative to another, implying adjacency or accessibility via.

His office is off this corridor on the right.

We're just off the main road.