WordNet: alarming

frightening because of an awareness of danger

• attribute alarm, consternation, dismay

• similar to appalling, dismaying

• similar to atrocious, frightful, horrible, horrifying, ugly

• similar to awful, dire, direful, dread, dreaded, dreadful, fearful, fearsome, frightening, horrendous, horrific, terrible

• similar to baleful, forbidding, menacing, minacious, minatory, ominous, sinister, threatening

• similar to bloodcurdling, hair-raising, nightmarish

• similar to chilling, scarey, scary, shivery, shuddery

• similar to creepy, creepy-crawly

• similar to formidable, redoubtable, unnerving

• similar to ghastly, grim, grisly, gruesome, macabre, sick

• similar to hairy

• similar to petrifying

• similar to stupefying

• similar to terrific, terrifying

alarming

• (englanti) unalarming (antonym)
• (suomi) huolestuttava (synonyymi)