SLEEPY Meaning of SLEEPY in English a. 1.Drowsy, somnolent, dozy, heavy, inclined to sleep.2.Somniferous, soporiferous, narcotic, soporific, somnific, slumberous, opiate.3.Sluggish, inactive, heavy, lazy, dull, torpid, slow. Soule. Dictionary of English synonyms. Словарь английских синонимов. 2012