Acting up/acting out meaning?

answers1: She meant 'acting up' - misbehaving, attention-seeking. <br>
<br>
To 'act out' means to play a role, pretend, or explain by actions
rather than words. <br>
She just said the wrong word.
answers2: means he was seeking attention by doing stuff he wouldn't
normally do. either intentionally or acting out to release tension or
stress. it could involuntary!