Antonyms of adj sleepy

1 sense of sleepy

Sense 1
sleepy, sleepy-eyed, sleepyheaded -- (ready to fall asleep; "beginning to feel sleepy"; "a sleepy-eyed child with drooping eyelids"; "sleepyheaded students")

INDIRECT (VIA asleep) -> awake -- (not in a state of sleep; completely conscious; "lay awake thinking about his new job"; "still not fully awake")

Similarity of adj sleepy

1 sense of sleepy

Sense 1
sleepy, sleepy-eyed, sleepyheaded -- (ready to fall asleep; "beginning to feel sleepy"; "a sleepy-eyed child with drooping eyelids"; "sleepyheaded students")
       => asleep (predicate) (vs. awake) -- (in a state of sleep; "were all asleep when the phone rang"; "fell asleep at the wheel")