(used to indicate inclusion within space, a place, or limits)

walking in the park.

(used to indicate inclusion within something abstract or immaterial)

in politics; in the autumn.

(used to indicate inclusion within or occurrence during a period or limit of time)

in ancient times; a task done in ten minutes.

(used to indicate limitation or qualification, as of situation, condition, relation, manner, action, etc.)

to speak in a whisper; to be similar in appearance.

(used to indicate means)

sketched in ink; spoken in French.

(used to indicate motion or direction from outside to a point within) into

Let's go in the house.

(used to indicate transition from one state to another)

to break in half.

(used to indicate object or purpose)

speaking in honor of the event.

in or into some place, position, state, relation, etc.

Please come in.

on the inside; within.

in one's house or office.

in office or power.

in possession or occupancy.

having the turn to play, as in a game.

Baseball . (of an infielder or outfielder) in a position closer to home plate than usual; short

The third baseman played in, expecting a bunt.

on good terms; in favor

He's in with his boss, but he doubts it will last.

in vogue; in style

He says straw hats will be in this year.

in season

Watermelons will soon be in.

located or situated within; inner; internal

the in part of a mechanism.

Informal .

in favor with advanced or sophisticated people; fashionable; stylish

the in place to dine; Her new novel is the in book to read this summer.

comprehensible only to a special or ultrasophisticated group

an in joke.

well-liked; included in a favored group.

inward; incoming; inbound

an in train.

plentiful; available.

being in power, authority, control, etc.

a member of the in party.

playing the last nine holes of an eighteen-hole golf course ( opposed to out )

His in score on the second round was 34.

Usually, ins. persons in office or political power ( distinguished from outs ).

a member of the political party in power

The election made him an in.

pull or influence; a social advantage or connection

He's got an in with the senator.

(in tennis, squash, handball, etc.) a return or service that lands within the in-bounds limits of a court or section of a court ( opposed to out ).

to enclose. ?

be in for, to be bound to undergo something

esp. a disagreeable experience

We are in for a long speech.

in for it, Slang . about to suffer chastisement or unpleasant consequences

esp. of one's own actions or omissions

I forgot our anniversary again, and I'll be in for it now. Also, British for it.

in that

because; inasmuch as

In that you won't have time for supper, let me give you something now.

in with

on friendly terms with; familiar or associating with

They are in with all the important people.

adjective

la mode , chic , dashing , mod , modish , posh , smart , stylish , swank , swanky , trig