In some/many respects
With regard to some or many details.In many respects our new house is much more convenient than our previous one.
(not) in so many words
(not) exactly, (not) explicitly.My teacher told me about the problems in our class but not in so many words.
In so far as
To the extent that.In so far as the new office hours go I totally agree with my boss.
In single file
Lined up, one behind the other.Everybody lined up in single file behind their leader.
In sight
Able to be seen.There were no birds in sight so we went back to the hotel and stopped bird watching for the day.
In short supply
Not enough, in less than the amount or number needed.Chairs were in short supply so some guests had to sit on the floor.
In short order
Very quickly.I finished my work in short order and joined my friends at the restaurant.
In short
Stated briefly."In short, I have already explained how we are going to complete the next project."
In shambles
In a messy state.The house was in shambles after the two boys played in it all day.
In seventh heaven
Very happy.I have been in seventh heaven since I started my new job.