countersunk countersun • countersurprise · · · Info · Definitions · Synonyms · Characters · · countersunk · · Text Latin · · Script 11 · · Length 3 · · Syllables Definitions · · · (verb) insert (a nail or screw below the surface, as into a countersink). Synonyms: set, countersink. · · Verb Definition 1 Synonyms · · · set · · Synonym 1 countersink · · Synonym 2 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 k latin small letter k U+006B n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075