instilment instillment • instinct · · · Info · Definitions · Synonyms · Characters · · instilment · · Text Latin · · Script 10 · · Length 3 · · Syllables Definitions · · · (noun) the introduction of a liquid (by pouring or injection) drop by drop. Synonyms: instillation, instillment. · · Noun Definition 1 Synonyms · · · instillation · · Synonym 1 instillment · · Synonym 2 Characters · · e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E s latin small letter s U+0073 t latin small letter t U+0074