| Word | Definitions | Synonyms |
|---|---|---|
| wakeful | (adjective) carefully observant or attentive; on the lookout for possible danger | Synonyms: argus-eyed, open-eyed, vigilant, watchful |
| (adjective) marked by full consciousness or alertness | Synonyms: waking | |
| (adjective) (of sleep) easily disturbed | Synonyms: light | |
| wakeless | (adjective) (of sleep) deep and complete | Synonyms: heavy, profound, sound |