elusive

/ɪˈl(j)uː.sɪv/adjectiveEnglishC1

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  1. Hard to catch, find, understand, or remember.

    In other words: hard to catch, hard to grasp, hard to remember

    • The suspect remained elusive for weeks.
  2. Vague or difficult to define precisely.

    In other words: vague, indefinite, hard to pin down

    • The exact cause of the problem is still elusive.
  3. Rarely seen or encountered.

    In other words: rare, uncommon, seldom seen

    • The elusive bird was spotted only once that season.