Not prudent or wise.

Roget 460: neglecting etc. v.; unmindful, negligent, neglectful; heedless, careless, thoughtless; perfunctory, remiss; feebleness etc. 575.    inconsiderate; uncircumspect^†, incircumspect^†; off one's guard; unwary, unwatchful^†, unguarded; offhand.    supine etc. (inactive) 683; inattentive etc. 458; insouciant etc. (indifferent) 823; imprudent, reckless etc. 863; slovenly etc. (disorderly) 59, (dirty) 653; inexact etc. (erroneous) 495; improvident etc. 674.    neglected etc. v.; unheeded, uncared-for, unperceived, unseen, unobserved, unnoticed, unnoted^†, unmarked, unattended to, unthought of, unregarded^†, unremarked, unmissed^†; shunted, shelved.    unexamined, unstudied, unsearched^†, unscanned^†, unweighed^†, unsifted, unexplored.    abandoned; buried in a napkin, hid under a bushel.    ... show more

Roget 863: rash, incautious, indiscreet; imprudent, improvident, temerarious; uncalculating^†; heedless; careless etc. (neglectful) 460; without ballast, heels over head, head over heels; giddy etc. (inattentive) 458; wanton, reckless, wild, madcap; desperate, devil-may-care.    hot-blooded, hotheaded, hotbrained^†; headlong, headstrong; breakneck; foolhardy; harebrained; precipitate, impulsive.    overconfident, overweening; venturesome, venturous; adventurous, Quixotic, fire eating, cavalier; janty^†, jaunty, free and easy.    off one's guard etc. (inexpectant) 508^†.    ... show more

Polish: nierozważny, nieprzemyślany, lekkomyślny

Lacking wise self-restraint.