🧩 fast

Sizes & Amounts · chosen synonyms, sense by sense

adjectivemoving quickly

quickrapidswiftspeedybriskfleet

Rapid suits processes and water; swift suits a runner and a decision; brisk is a walk or a trade; quick is the hand, fast is the whole body.

adverbfirmly (stuck fast)

firmlytightsecurelyfastenedsoundly

The old sense survives in stuck fast, fast friends, fast asleep and a fast colour — speed is the newer meaning.

The other end: slow

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How this page was made

The rings above were chosen by hand for tukuk.org, sense by sense, and checked against usage rather than a synonym database dump. The dictionary tool can list WordNet’s full synonym sets for any of 200,000 words; this shelf keeps the forty words where choosing is genuinely hard and says how.