watchful

adj. awake, attentive; alert, on guard

Watchful (1997) is an album by the American experimental pop music group Amoeba. This is the first Amoeba album to feature the classic lineup of Robert Rich and Rick Davies. The style of this album consists of subtle and largely acoustic pop compositions with heavy ambient textures.Work on this album began in 1994. It was completed in 1995. Over the next two years they searched for a label to distribute the album. It was finally released in 1997 on the Lektronic Soundscapes label. When distribution problems arose with Lektronic Soundscapes, they moved to Release Records, who had also released Rich’s solo album Trances/Drones.
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Adjective
1. carefully observant or attentive; on the lookout for possible danger; "a policy of open-eyed awareness"; "the vigilant eye of the town watch"; "there was a watchful dignity in the room"; "a watchful parent with a toddler in tow"
(synonym) argus-eyed, open-eyed, vigilant, wakeful
(similar) alert
2. experiencing or accompanied by sleeplessness; "insomniac old people"; "insomniac nights"; "lay sleepless all night"; "twenty watchful, weary, tedious nights"- Shakespeare
(synonym) insomniac, sleepless
(similar) awake(p)

(a.)
Full of watch; vigilant; attentive; careful to observe closely; observant; cautious; -- with of before the thing to be regulated or guarded; as, to be watchful of one's behavior; and with against before the thing to be avoided; as, to be watchful against the growth of vicious habits.
  

Synonyms and related words:
Argus-eyed, advertent, agog, alert, all ears, all eyes, assiduous, attentive, aux aguets, aware, careful, cautious, chary, circumspect, concentrated, conscious, covering, custodial, defensive, diligent, eagle-eyed, earnest, finical, finicking, finicky, fostering, guarded, guardian, guarding, hawk-eyed, heedful, immunizing, intense, intent, intentive, keen-eyed, lidless, meticulous, mindful, nice, niggling, observant, observing, on guard, on the ball, on the job, on the lookout, on the watch, open-eared, open-eyed, openmouthed, parental, preventive, prompt, prophylactic, protecting, protective, prudent, quick, ready, regardful, safeguarding, screening, sharp-eyed, sheltering, shielding, sleepless, tutelary, unsleeping, vigilant, wakeful, wary, wide-awake, with open eyes