countersink C2+ Topic:The Human Body US /ˈkaʊntɚˌsɪŋk/ UK /ˈkaʊntəsɪŋk/ See IPA manual Meanings 1 verb to bevel a hole so a screw head sits flush with the surface Countersink each screw so the panel stays perfectly smooth. Thesaurus Synonyms 1 verb · to bevel a hole so a screw... bevelrecesschamfer Word family Related forms countersink Etymology AI details From 'counter-' ('against, opposite') plus 'sink'. 'Sink' is from Old English 'sincan' ('to become submerged, go down'). sincan Old English View etymology graph -> Topics The Human Body External links Cambridge Dictionary Wiktionary Google Images # countersink **Type:** Word **Level:** C2+ **Part of speech:** verb **IPA (US):** /ˈkaʊntɚˌsɪŋk/ **IPA (UK):** /ˈkaʊntəsɪŋk/ ## Meanings 1. to bevel a hole so a screw head sits flush with the surface ## Examples - Countersink each screw so the panel stays perfectly smooth. ## Synonyms - bevel - recess - chamfer ## Related Forms - counter - sink ## Roots and Affixes - Root: sincan ## Etymology From 'counter-' ('against, opposite') plus 'sink'. 'Sink' is from Old English 'sincan' ('to become submerged, go down'). ## AI Etymology Countersink is from 'counter-' ('against, opposite') plus 'sink'. 'Sink' is from Old English 'sincan' ('to become submerged, go down'). The immediate etymological form is Old English sincan. The prefix counter- contributes opposition, response, or matching action, helping to explain the word's surface structure. In present use as verb and noun, it means "to bevel a hole so a screw head sits flush with the surface", keeping the historical formation close to the word's ordinary semantic work. Related words include counter and sink. ## Topics - The Human Body markdown