dead calm
noun- Dead calm prevails over the Atlantic.
- Synonyms
- clock calm
dead calm
adj1
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.
- Synonyms
- clock calm
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.