on second thought
After reconsidering; on further consideration.
I originally thought that it was a good idea, but on second thought I'm not so sure.
noun
A representation created in the mind without the use of one's faculties of vision, sound, smell, touch, or taste; an instance of thinking.
The greatest weapon against stress is our ability to choose one thought over another.
I hate the thought of going back to work Monday morning.
The operation by which mental activity arise or are manipulated; the process of thinking; the agency by which thinking is accomplished.
Without freedom of thought there can be no such thing as wisdom, and no such thing as public liberty without freedom of speech.
The only reason some people get lost in thought is because it’s unfamiliar territory.
A way of thinking (associated with a group, nation or region).
Traditional eastern thought differs markedly from that of the west.
Anxiety, distress.
Which of you by taking thought, can adde one cubite vnto his ſtature?
The careful consideration of multiple factors; deliberation.
After much thought, I have decided to stay.