TIDDLY Meaning of TIDDLY in English 1. adj. (tiddlier, tiddliest) esp. Brit. colloq. slightly drunk. Etymology: 19th c., earlier a drink: orig. unkn. 2. adj. (tiddlier, tiddliest) Brit. colloq. little. Oxford English vocab. Оксфордский английский словарь. 2012