unalarming

If something's unalarming, it's nothing to get upset about. If your dog's barking late at night doesn't worry you at all, you find it unalarming.

The root of this word is the verb alarm, which means "cause to feel frightened or disturbed." And when something is alarming, it's scary, upsetting, or disturbing. So the adjective unalarming, with that added prefix un-, means the opposite: "Everything's fine! That noise is completely unalarming. It's just my broken smoke detector going off again."

Definitions of unalarming

1. adjective

   not alarming; assuaging alarm
   antonyms:

   alarming

   frightening because of an awareness of danger

   appalling, dismaying

   causing consternation

   atrocious, frightful, horrible, horrifying, ugly

   provoking horror

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

   causing fear or dread or terror

   baleful, forbidding, menacing, minacious, minatory, ominous, sinister, threatening

   threatening or foreshadowing evil or tragic developments

   bloodcurdling, hair-raising, nightmarish

   extremely alarming

   chilling, scarey, scary, shivery, shuddery

   provoking fear or terror

   creepy, creepy-crawly

   causing a sensation as of things crawling on your skin

   formidable, redoubtable, unnerving

   inspiring fear

   ghastly, grim, grisly, gruesome, macabre, sick

   shockingly repellent; inspiring horror

   hairy

   hazardous and frightening

   petrifying

   paralyzing with terror

   stupefying

   shocking with surprise and consternation

   terrific, terrifying

   causing extreme terror