You make a decision, and a minute later you are not so sure. English has a neat phrase for that moment, and it comes in two forms that professionals use all the time.
“On second thought” means after reconsidering, and it introduces a change of mind. “To have second thoughts” means to start doubting a decision you have already made. Both are natural, polite ways to change direction without sounding indecisive.
On second thought
After reconsidering. Use it at the start of a sentence to announce that you have changed your mind.
- “On second thought, I think I’ll go home.”
- “On second thought, let’s hire supplier X.”
In British English you will often hear “on second thoughts“, with an s. Both are correct. American English usually uses “on second thought”.
Have second thoughts
To doubt a decision or wonder if it was the right one.
- “We have second thoughts about the plan.”
- “I’m having second thoughts about the job.”
Synonyms: reconsider, rethink, change your mind, have doubts
How to change your mind professionally
In a meeting, changing your mind can feel awkward. These phrases make it sound considered rather than uncertain.
- “On second thought, it might be better to wait until we have the final figures.”
- “I’ve had second thoughts about the timeline. Can we review it together?”
- “Having given it some more thought, I’d like to suggest a different approach.”
The key is to give a short reason. “On second thought, let’s wait” sounds hesitant. “On second thought, let’s wait until legal has checked it” sounds professional.
