occur is on the Academic Word List.

Pronunciation

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Plain form
occur

Third-person singular
occurs

Past tense
occurred

Past participle
occurred

Present participle
occurring

Occur is on the Academic Vocabulary List.
  1. (intransitive) If something occurs, it happens.
    Over the summer a change occurred in my friend’s behaviour.
  2. (intransitive) If something occurs to you, you suddenly think of it.
    It occurred to me that I was in trouble.
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