unvigilant (adjective) incautious: not careful
Sinonime: any old way,
bold,
brash,
careless, caught napping, devil-may-care, fast-and-loose, foot-in-mouth,
hasty,
heedless, hotheaded, ill-advised, ill-judged,
impetuous, improvident,
imprudent,
impulsive,
inconsiderate, indiscreet, injudicious, madcap, neglectful,
negligent, off guard, pay no mind, playing with fire,
precipitate,
rash,
reckless,
regardless, sticking one's neck out,
thoughtless, unalert, unguarded, unmindful, unthinking, unvigilant, unwatchful,
wary, wide open
Antonime: careful,
cautious,
discreet,
thoughtful