(a.) Lacking prudence or discretion; indiscreet; not attentive to consequence\; improper.

blanket brash brazen brazenfaced careless casual crazy foolhardy foolish general hasty heedless hubristic ill-advised ill-considered ill-contrived ill-devised ill-gauged ill-judged impetuous impolitic improvident impudent impulsive inadvisable inane incautious inconsiderate indiscreet indiscriminate indiscriminative inexpedient injudicious insane insensate insensitive insolent irrational irresponsible mad mindless misadvised misguided myopic nonjudgmental overbold overcareless overconfident oversure overweening perverse promiscuous rash reasonless reckless senseless shortsighted silly tactless temerarious thoughtless unadvised unchary unconsidered uncritical uncriticizing undemanding undifferentiating undiscerning undiscreet undiscriminating undiscriminative unexacting unfastidious unforeseeing unmeticulous unparticular unreasonable unreflecting unreflective unseeing unselective unsensible unsound unsubtle untactful unthinking unthoughtful unwary unwise wholesale witless wrong