1The details of the meeting were unimportant, so I didn't take notes.
2Is it really unimportant to you whether we go to the beach or the park?
3The teacher told us that the homework was unimportant and we didn't have to do it.
4Don't worry about the small mistakes; they're unimportant in the grand scheme of things.
5The company decided that the new policy was unimportant and didn't implement it.