eddy

Word family

• eddying
  adjectiveC2

Synonym discussion

Sense: noun/1

All four words describe rotating motion in a fluid, but they differ in scale, force, and register. An eddy is usually small and short-lived — the swirl you see in a river beside a rock, or wisps of smoke turning over a candle. A whirlpool is bigger and stronger, restricted almost entirely to water, and often carries a sense of danger that can pull a boat or a swimmer in. A vortex is the most technical and most dramatic of the four; physicists use it for any column of rotating fluid, and writers borrow it for powerful spiralling forces (a vortex of wind, a vortex of debate). A swirl is the most everyday and visual word, used for anything that turns in a curving line, from cream stirred into coffee to a pattern in a carpet. So you might say: 'small eddies formed behind the stones' (modest, natural), 'a whirlpool nearly swallowed the canoe' (big, dangerous water), 'the storm became a vortex of wind and rain' (forceful, often figurative).

Common collocations

Etymology

Probably from an Old Norse word related to 'idha', meaning a whirling current or backwater. It first appeared in English in the late 1400s, originally as a noun for a swirling patch of water that runs against the main flow. The verb sense developed later, and the figurative uses for crowds, smoke, or emotions are mostly from the 1800s onward, when writers extended the watery image to anything that turns and circulates in a similar way.