sleepy /ˈsliːpi/adjective 5noun 2verb 1forms 3 adjective5 •tired in a way that makes it hard to keep the eyes openShe wak'd her sleepy crew. — 1700 •Suggesting tiredness. •(figurative) Quiet; without bustle or activity.Experts believe a pandemic welfare programme for poorer Brazilians has encouraged robbers to plan bold raids in sleepy regional cities where bank branches are storing more cash. — 2021 •Tending to induce sleep. •(figurative) Dull; lazy.'Tis not sleepy business; But must be looked to speedily and strongly. — 1611 noun2 •[in the plural] (informal) The gum that builds up in the eye; sleep, gound."Did he always leave the sleepy in his eyes?" "Never removed it; let it build up in the comers of his eyes over the weeks until it was heavy enough to fall […] — 1964 •(Australia) Shingleback. verb1 •To sleep.im going to sleep BEING UP 28 hours is not good for my health so. ill see you all tomorrow! — 2000 formssleepies · sleepier · sleepiest