Word parts change

under- + cover

Pronunciation change

  • IPA (key): /ˌʌndə(r)ˈkʌvə(r)/
  • (file)

Adjective change

Positive
undercover

Comparative
more undercover

Superlative
most undercover

  1. An action or person is undercover if it is hidden or secret: the people doing it don't want other people to know about it.
    We're planning an undercover operation to try to catch those people.
  2. Something is undercover if it involves spying.
    We sent three undercover agents to that country to try to find out what their government plans to do.