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questioning (EN)
noun, adjective

This word can also be a form of:
question (verb)

noun “questioning”

singular questioning, plural questionings or uncountable
  1. the act of interrogating someone
    The suspect was taken to the police station for questioning.
  2. the action of asking questions or inquiring
    The reporter's questioning unveiled the truth behind the scandal.

adjective “questioning”

base form questioning (more/most)
  1. showing curiosity or doubt; expressing questions
    She gave him a questioning look when he arrived late.