trigger verb

/ˈtrɪg.ər/

/-ɚ/ v [T]

Definition

to cause something bad to start

Some people find that certain foods trigger their headaches.

The racial killings at the weekend have triggered off a wave of protests.

(Definition of trigger verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

worried or nervous about something that is going to happen

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