how long

English

Adjective

how long

  1. Used literally: what length.
    How long is that piece of string?
    I don't know how long the Amazon River is.
  2. Used literally: what duration.
    How long is the flight?
    How long is it to lunch?

Derived terms

Translations

Adverb

how long

  1. Used literally: for what duration.
    How long have you lived in Chicago?
    He won't tell me how long he is going to stay.
    • 1898, J. Meade Falkner, chapter 4, in Moonfleet, London, Toronto, Ont.: Jonathan Cape, published 1934:
      How long I slept I cannot tell, for I had nothing to guide me to the time, but woke at length, and found myself still in darkness.

Translations

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