stayed calm
- composedCalm and self-possessed
- collectedCalm and self-possessed
- sereneUntroubled and composed
- unruffledEmotionally undisturbed, placid
- cool-headedCalm when stressed
steady · poised · unfazed · level-headed · tranquil · centered · grounded · breathed · exhaled · patience · stillness · anchor · rock · measured · even-keeled · stoic · unbothered · relaxed
emotional state
stayed calmpanicked
Overwhelmed by sudden fear
freaked out · lost it · snapped · exploded · flipped out
behavioral response
stayed calmlashed out
Attacked verbally or physically
threw a tantrum · flew off the handle · overreacted · blew up · lost their temper