threatening or foreshadowing evil or tragic developments; "a baleful look"; "forbidding thunderclouds"; "his tone became menacing"; "ominous rumblings of discontent"; "sinister storm clouds"; "a sinister smile"; "his threatening behavior"; "ugly black clouds"; "the situation became ugly"
deadly or sinister; "the Florida eagles have a fierce baleful look"
lacking regard for the rights or feelings of others; "shockingly inconsiderate behavior"
without proper consideration or reflection; "slovenly inconsiderate reasoning"; "unconsidered words"; "prejudice is the holding of unconsidered opinions"
without careful prior deliberation or counsel; "ill-advised efforts"; "it would be ill-advised to accept the offer"; "took the unadvised measure of going public with the accusations"
not suitable for a particular occasion etc; "noise seems inappropriate at a time of sadness"; "inappropriate shoes for a walk on the beach"; "put inappropriate pressure on them"
not in keeping with what is correct or proper; "completely inappropriate behavior"