slack water: meaning, definition, pronunciation and examples

C2/Rare
UK/ˌslæk ˈwɔːtə/US/ˌslæk ˈwɔːtɚ/

Technical/Literary

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Quick answer

What does “slack water” mean?

A short period at the turn of the tide when there is little or no horizontal movement of water.

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Pronunciation

Definition

Meaning and Definition

A short period at the turn of the tide when there is little or no horizontal movement of water.

A period of relative calm, inactivity, or stasis, either literally (in a river or estuary) or metaphorically (in a situation).

Dialectal Variation

British vs American Usage

Differences

No significant difference in core meaning. The term is more likely to be encountered in UK coastal/nautical contexts due to greater tidal range in many areas.

Connotations

Neutral/descriptive in both. Can imply a brief, opportune moment for navigation or a temporary cessation of activity.

Frequency

Equally rare and technical in both varieties. More frequent in regions with strong tides (e.g., UK's Bristol Channel, US's Bay of Fundy).

Grammar

How to Use “slack water” in a Sentence

N occurs at/after/before slack waterDuring N, V is possibleN is a period of [calm/stasis]

Vocabulary

Collocations

strong
at slack waterduring slack waterslack water periodslack water time
medium
reach slack waterwait for slack waterthe calm of slack watershort slack water
weak
true slack waterhigh slack waterslack water approachedpredict slack water

Examples

Examples of “slack water” in a Sentence

verb

British English

  • The current will slack about noon, according to the tide tables.
  • We waited for the tide to slack before attempting the manoeuvre.

American English

  • The river slacks here for a brief period before the ebb begins.
  • Sailors watch for the current to slack before entering the narrows.

adjective

British English

  • The slack-water period is ideal for divers to explore the wreck.
  • They took advantage of the slack-water conditions.

American English

  • The slack-water moment was fleeting but crucial for the survey.
  • Slack-water fishing can be productive for certain species.

Usage

Meaning in Context

Business

Metaphorically, to describe a market or project in a period of low activity: 'Sales entered a slack water phase before the holiday rush.'

Academic

Used in geography, oceanography, and hydrology papers discussing tidal dynamics and sediment transport.

Everyday

Very rare. Might be used by sailors, fishermen, or coastal residents: 'We'll cross the channel at slack water.'

Technical

Precise term in navigation, marine engineering, and environmental science to denote the moment of minimal tidal current.

Vocabulary

Synonyms of “slack water”

Strong

dead tideslack tide

Neutral

still watertidal standstand of tide

Vocabulary

Antonyms of “slack water”

Watch out

Common Mistakes When Using “slack water”

  • Using 'slack water' to mean shallow water (incorrect).
  • Confusing it with 'low tide' (which is a water level, not necessarily a current state).
  • Using it as a verb (e.g., 'The water slacked') – though 'slack' alone can be a verb.

FAQ

Frequently Asked Questions

No. Low tide refers to the lowest water level. Slack water refers to the period of little to no horizontal current, which occurs near the times of high and low tide but is not the same moment.

Yes, though it's a literary device. It can describe a period of inactivity or pause in events, e.g., 'the slack water of negotiations.'

It varies greatly by location. In areas with strong tides, it may last only a few minutes. In areas with weak tides, it can be longer or less defined.

Yes, 'slack tide' is a common synonym used interchangeably with 'slack water' in nautical contexts.

A short period at the turn of the tide when there is little or no horizontal movement of water.

Slack water is usually technical/literary in register.

Slack water: in British English it is pronounced /ˌslæk ˈwɔːtə/, and in American English it is pronounced /ˌslæk ˈwɔːtɚ/. Tap the audio buttons above to hear it.

Phrases

Idioms & Phrases

  • caught in the slack water (metaphor for inactivity)
  • the slack water of the afternoon (literary lull)

Learning

Memory Aids

Mnemonic

Imagine a slack rope hanging loose – 'slack water' is when the tide's 'pull' goes slack and the water stops moving.

Conceptual Metaphor

TIME IS A TIDE; ACTIVITY IS CURRENT (a period of inactivity is a slackening of the current).

Practice

Quiz

Fill in the gap
For safe passage through the turbulent strait, the captain timed the crossing for the .
Multiple Choice

What does 'slack water' specifically refer to?