Main entry: ban, banning, forbiddance, forbidding
Definition: an official prohibition or edict against something
Main entry: threatening, baleful, ominous, minacious, minatory, sinister, menacing, forbidding
Definition: threatening or foreshadowing evil or tragic developments
Usage: 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
Main entry: grim, dour, forbidding
Definition: harshly uninviting or formidable in manner or appearance
Usage: a dour, self-sacrificing life; a forbidding scowl; a grim man loving duty more than humanity; undoubtedly the grimmest part of him was his iron claw- J.M.Barrie