uncircumspect
11reckless — reck·less adj: characterized by the creation of a substantial and unjustifiable risk to the lives, safety, or rights of others and by a conscious and sometimes wanton and willful disregard for or indifference to that risk that is a gross… …
12off-handed — adjective a) negligent, neglectful, careless, unmindful, inattentive, uncaring, insouciant, indifferent, casual, slapdash, lax, perfunctory, superficial, sluttish, untidy, slovenly, uncircumspect b) Note that, according to Partridge, off handed… …
13hot-blooded — adjective aggressive, amorous, athirst, avid, barbarous, bold, brutal, burning, careless, danger loving, daredevil, daring, desirous, desperate, eager, excessive, excitable, extreme, febrile, fervent, fervid, feverish, fiery, flaming, foolhardy,… …
14imprudent — I adjective adventurous, brash, careless, foolhardy, foolish, hasty, hazardous, heedless, hot headed, ill advised, ill considered, ill judged, impolitic, improvident, impulsive, inadvisable, incautious, inconsiderate, inconsultus, indiscreet,… …
15impulsive — I (impelling) adjective activating, actuating, animating, compelling, driving, dynamic, dynamical, energizing, impellent, kinetic, moving, prompting, propulsive, pushing, stimulating, urging II (rash) adjective abrupt, adventurous, bold,… …
16lax — I adjective absentminded, apathetic, careless, casual, derelict, disorganized, disregarding, dissolutus, feckless, forgetful, halfhearted, heedless, idle, imprecise, improvident, imprudent, inaccurate, inadvertent, inattentive, incautious,… …
17remiss — I adjective careless, delinquent, derelict, dilatory, disregardant, disregardful, dutiless, forgetful, heedless, idle, improvident, imprudent, inattentive, inconsiderate, indifferent, indolent, injudicious, lackadaisical, late, lax, lazy, loafing …
18derelict — Synonyms and related words: Bowery bum, DP, Ishmael, abandoned, battered, beachcomber, beat up, beaten up, beggar, beggarly fellow, behindhand, blighter, broken down, budmash, bum, bummer, caitiff, careless, cast off, castaway, castoff, culpably… …
19inadvertent — Synonyms and related words: arbitrary, automatic, capricious, careless, casual, culpably negligent, derelict, disregardant, disregardful, distracted, distrait, feckless, gut, heedless, ill advised, ill considered, ill devised, inattentive,… …
20inattentive — Synonyms and related words: apathetic, artless, ataractic, blase, careless, casual, culpably negligent, derelict, devil may care, disinterested, dispassionate, disregardant, disregardful, distracted, distrait, distraught, easygoing, half assed,… …