Wakeful

Fits when fresh morning energy is part of the compliment

Careful Bright-eyed feels too cheerful for an overnight vigil or anxious sleeplessness.

Fits when quick awareness of changes or danger is central

Careful Daytime alertness does not indicate that someone remained wakeful overnight.

Fits when inability to settle is more important than useful alertness

Careful Restless often signals discomfort, making it poor praise for calm readiness.

Fits when complete freedom from drowsiness should sound conversational

Careful Wide-awake is less graceful in reflective or literary writing.

Fits when alertness is directed toward another person's safety

Careful Watchful may continue over many hours without emphasizing sleeplessness.

Fits when sustained focus on a person or task deserves praise

Careful Attentive suits careful listening, but it says nothing about resisting sleep.

Fits when watchfulness protects against a specific risk

Careful Vigilant sounds threat-focused if the scene is simply quiet nighttime awareness.

Fits when alert perception is also realistic and unsentimental

Careful Clear-eyed concerns judgment, so it is inaccurate for wakefulness without insight.