watchful (adj.)
wakeful, unsleeping, vigilant
2H4 IV.v.26 [Prince Henry to himself, of the crown] That keepest the ports of slumber open wide / To many a watchful night!
JC II.i.98 [Brutus to Cassius] What watchful cares do interpose themselves / Betwixt your eyes and night?
R3 III.vii.76 [Buckingham to the Lord Mayor, of Richard] He is ... praying, to enrich his watchful soul
TG I.i.31 [Valentine to Proteus, of love] one fading moment's mirth, / With twenty, watchful, weary, tedious nights