in a sense
In some ways but not in all; somewhat.
Mr. Smith said our school is the best in the state, and in a sense that is true.
In a sense, arithmetic is a language.
in a way
To a certain extent; a little; somewhat.
I like Jane in a way, but she is very proud.
In one thing.
In a way, this book is easier: it is much shorter.
in a while
Later, at some time in the future; after a time that is not short and not long.
The boys gathered some wood, and in a while, a hot fire was burning.
in a world of one's own
in a world by oneself
In the place where you belong; in your own personal surroundings; apart from other people.
They are in a little world of their own in their house on the mountain.
In deep thought or concentration.
Mary is in a world of her own when she is playing the piano.
Not caring about or connected with other people in thoughts or actions. Usually used sarcastically.
That boy is in a world all by himself. He never knows what is happening around him.
in a zone
In a daze; in a daydream; in a state of being unable to concentrate.
Professor Smith puts everyone in a zone.
in absentia
absentia
When the person is absent. Used in graduation exercises when presenting diplomas to an absent student or during a court case. (Latin, meaning in absence.)
On Commencement Day, Joe was sick in bed and the college gave him his bachelor's degree in absentia.
in accordance with
In consonance with something; conforming to something.
Employees at this firm are expected to always behave in accordance with the rules.
in addition
As something extra; besides.
We saw a Mickey Mouse cartoon in addition to the cowboy movie.
Aunt Mary gave us sandwiches for our picnic and a bag of cookies in addition.
He has two cars and in addition a motorboat.