on second thought

Idioms  

1. Resulting from a revised opinion or change of mind, as in I thought I'd go to the movies, but on second thought I'd rather stay home. Similarly, have second thoughts means “change one's mind,” as in I've had second thoughts about moving to Florida. This idiom alludes to ideas that come later. [Mid-1600s]

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Example Sentences

The Commanders’ own version of this may be the “Redskins Rule,” which, on second thought, probably warrants a new name after the former moniker was retired.

From Washington Times • Aug. 25, 2022

Muñiz playfully gave the overall five-year experience a passing grade of C-plus — maybe even a B-minus, on second thought, “because it did the job.”

From Washington Post • Feb. 10, 2022

But you have to hand it to Denver ... on second thought, the Clippers already did.

From Los Angeles Times • Sep. 18, 2020

It’s also extremely likely that one of the kids who is in his friend group will wake up one day, look at him sideways, and be like: Actually, on second thought ….

From Slate • Oct. 24, 2018

And on second thought, he kind of does need to pee.

From "Paper Towns" by John Green