on second thought meaning

• [American idiom]
  having given something more thought; having reconsidered something.
  • On second thought, maybe you should sell your house and move into an apartment.
  • On second thought, let's not go to a movie.
  
• 
  [American slang]
  Fig. having given something more thought; having reconsidered something.
    On second thought, maybe you should sell your house and move into an apartment.
    On second thought, let's not go to a movie.

• second thought:    Noun: second thoug ...
• don't give it a (second) thought.:    [American slang]Go ...
• in thought:    Thinking, reflecti ...

Examples

1. on second thoughts i think i would better go now.
2. but on second thoughts i considered it better to remain silent on that deed.
3. on second thought, that is perhaps not a bad idea
4. -mama will be so proud !-on second thought . ..
5. mama will be so proud !-on second thought . ..