(~s)
1.
If you do something without a ~, you do it without thinking about it carefully, usually because you do not have enough time or you do not care very much.
This murderous lunatic could kill them both without a ~...
Roberto didn’t give a ~ to borrowing $2,000 from him.
N-SING: with brd-neg, a N
2.
If you have ~s about a decision that you have made, you begin to doubt whether it was the best thing to do.
I had never had ~s about my decision to leave the company.
N-PLURAL: oft N about n
3.
You can say on ~s or on ~ when you suddenly change your mind about something that you are saying or something that you have decided to do.
‘Wait there!’ Kathryn rose. ‘No, on ~, follow me.’
PHRASE: PHR with cl