to fall / (computing) to go down (as when a computer or application becomes unresponsive) / (electrical engineering, of a circuit breaker) to trip / (informal) to fail an examination

someone's current personal craze or obsession

Doing something at one's own personal pace or speed (unaffected by the pacing of peers).

belladonna (a plant, Atropa belladonna)

(informal) at a loss for words

(informal) to be at a loss for words

human advertisement who attracts attention using loud instruments

a half-holiday

(onomatopoeia, informal) fighting; warring

(idiomatic) to keep a secret when asked about it, but let it slip inadvertently when chatting on another occasion