second thought

American  

Or second-thought

noun

1. Often second thoughts. reservation about a previous action, position, decision, judgment, or the like.

   He had second thoughts about his decision.

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idioms

1. on second thought, after reconsideration.

   On second thought, I don't think I'll go.

second thought British  

noun

1. (usually plural) a revised opinion or idea on a matter already considered

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Etymology

Origin of second thought

First recorded in 1625–35

Example Sentences

Only three of them will now remain in Australia, after another member of the group had second thoughts earlier in the week.

From Barron's

On second thought, maybe the unruffled, dismissive response is the way to go.

From Los Angeles Times

On second thought, maybe that calls for something more formal.

From The Wall Street Journal

But on Saturday he told the press he’s had second thoughts because “the war is complicated enough.”

From The Wall Street Journal

Now three other Democrats who previously said they wouldn’t opt in are having second thoughts, Education Week reported Wednesday.

From The Wall Street Journal