English edit

Adjective edit

dead calm (not comparable)

  1. (of a body of water) Completely still with no waves and no wind.
    We were drifting on a dead calm sea for a third week in a row.

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Noun edit

dead calm (uncountable)

  1. (nautical) The condition of a perfectly flat sea with no waves and no wind.
    Dead calm prevails over the Atlantic.

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