| Main Entry: | on call |
| Part of Speech: | adjective |
| Definition: | ready to work |
Synonyms: |
accessible, at hand, at one's beck and call, at one's disposal, at one's fingertip, available, handy, night call, on alert, on deck, on the spot, on-call, prepared, standing by, within reach |
| Main Entry: | vigilant |
| Part of Speech: | adjective |
| Definition: | careful, watchful |
Synonyms: |
acute, agog, alert, anxious, attentive, aware, cautious, circumspect, guarded, keen, looking for, looking to, observant, on alert, on guard, on the ball, on the job, on the lookout, on the qui vive, on toes, open-eyed, sharp, sleepless, unsleeping, waiting on, wakeful, wary, wide-awake, with eyes peeled, with weather eye open |
Antonyms: |
careless, impulsive, inattentive, indiscreet, negligent |
| Main Entry: | wakeful |
| Part of Speech: | adjective |
| Definition: | alert, restless |
Synonyms: |
alive, astir, attentive, careful, heedful, insomniac, insomnious, observant, on guard, on the alert, on the lookout, on the qui vive, sleepless, unsleeping, vigilant, waking, wary, watchful, wide-awake |
Antonyms: |
sleepy, unaware |
| Main Entry: | unsleeping |
| Part of Speech: | adjective |
| Definition: | wakeful |
Synonyms: |
alive, astir, attentive, awake, careful, heedful, insomniac, insomnious, observant, on guard, on the alert, on the lookout, on the qui vive, sleepless, vigilant, waking, wary, watchful, wide-awake |