I mean, what verb should/can "call" be replaced with to obtain the opposite?
In the spirit of the card game comment by @jejorda2, I’d say they is no opposite.
Calling their bluff is just one of three options.
In poker, when someone bets (and they may or may have been bluffing) you have more than two options. They are -
- call - call someone’s bluff, you don’t really believe their “story” but are a little bit scared it could still be true
- fold - give in and fall for their bluff
- raise - increase the stakes, potentially going “all in” because you’re not scared