alarming
adjective
1. frightening because of an awareness of danger
Similar word(s): appalling, dismaying, atrocious, frightful, horrible, horrifying, ugly, awful, dire, direful, dread, dreaded, dreadful, fearful, fearsome, frightening, horrendous, horrific, terrible, baleful, forbidding, menacing, minacious, minatory, ominous, sinister, threatening, bloodcurdling, nightmarish, chilling, scary, shivery, shuddery, creepy, formidable, redoubtable, unnerving, ghastly, grim, grisly, gruesome, macabre, sick, hairy, petrifying, stupefying, terrific, terrifying
verb
1. present participle of alarm