This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. alertness, vigilance or wakefulness

n. The state or character of being watchful, in any sense.

n. vigilant attentiveness

n. the process of paying close and continuous attention

"She had failed in watchfulness before (So 1: 6); now when converted, she is the more jealous of subtle sins (Ps 139: 23)."

ignore   

watched    watches    watchfulness    watching   

watchman    watcher    security guard    time period    period of time    period   

await    guard    to keep a good watch    to stand a watch    duplex watch    deck watch    paddy's watch    decimal watch    forecastle watch    to muster the watch   

dogwatch   

see    observe    take-in    catch    view    rubberneck    witness    keep one's eyes peeled    keep one's eyes skinned    keep one's eyes open   

vigil    guard    sentry    wake    wait    tend    invigilate    waken    mark    picket   

Auch    Boche    Koch    Scotch    bauch    botch    brauch    crotch    gotch    hauch   

Movies & Film    Television    Celebrity   

guard    ring    one    gun    clothe    clock    shoot    call    station    look