in

preposition

1》 expressing the situation of being enclosed or surrounded by something.

2》 expressing motion that results in being within or surrounded by something.

3》 expressing a period of time during which an event happens or a situation remains the case.

4》 expressing the length of time before a future event is expected to happen.

5》 expressing a state, condition, or quality.

6》 expressing inclusion or involvement.

7》 indicating someone's occupation or profession.

8》 indicating the language or medium used.

9》 expressing a value as a proportion of (a whole).

adverb

1》 expressing movement that results in being enclosed or surrounded by something.

2》 expressing the situation of being enclosed or surrounded by something.

    ↘present at one's home or office.

    ↘Cricket batting.

3》 expressing arrival.

4》 (of the tide) rising or at its highest level.

adjective informal fashionable.

Phrases

be in for have good reason to expect (something, typically something unpleasant).

be in for it have good reason to expect trouble or retribution.

in on privy to (a secret).

in that for the reason that.

in with informal on friendly terms with.

the ins and outs informal all the details.

Origin

OE in (preposition), inn, inne (adverb), of Gmc origin.