stylo adjective 1noun 2forms 3 adjective1 •(Singapore, informal) Stylish; fashionable.We so stylo, they just vile-o / We speak Singlish, awmost English-lah — 2024 noun2 •A stylographic pen.Malone put his stylo in his pocket. There was no use reporting a lunatic. — 1925 •Any of the genus Stylosanthes of flowering plants. formsstylos · more stylo · most stylo