Adjective: unadvised ,ún-ud'vIzd
- Without careful prior deliberation or counsel
"took the unadvised measure of going public with the accusations";
- ill-advised
- Having received no information
"a defendant unadvised of her legal rights"
See also: daft [Brit, informal], dumb, foolish, imbecile, imbecilic, imprudent, stupid, uninformed