Wiktionary
second-guessing
vb. (present participle of second-guess English)
Usage examples of "second-guessing".
He seemed so much larger than those around him, so above the battlefield, a god among mortal men, that Brynn found herself second-guessing her instinct to retreat.
And even those former slaves must be second-guessing their decision to join the woman, as they spend the days wandering through the desert heat.
Now, if he's become such a threat as you've indicated, you might find me more than a little useful when it comes to second-guessing him.
She was the matron mother, after all, the strongest, the oldest, and the wisest, and did not appreciate others second-guessing her.
The only way she could make it through was to stop second-guessing herself.