Definition
to decide not to do something after initially considering it; to change one's mind about something.
決定不做某事；改變對某事的原意
She was going to tell him the truth, but then she thought better of it.
她本來打算告訴他真相，但後來改變了主意。
I had planned to buy that jacket, but I thought better of it because I already have many similar ones.
我原本打算買那件外套，但後來決定不買了，因為我已經有很多類似的了。
I was tempted to quit my job on impulse, but I thought better of it.
我曾經衝動想辭職，但後來改變了主意。