frightening
2 antonyms and opposites of frightening.
Adj — Causing fear; scary.
Synonyms for frightening
affreux
alarming
spine-tingling
appalling
awful
eldritch
buggish
butt-clenching
buttock-clenching
dismayful
dreadful
fearful
flaysome
flesh-crawling
formidable
freaky
frightensome
frightful
ghastly
ghostly
grisly
hair-curling
horrible
hair-raising
horrid
horrific
horrifying
horripilating
pulse-pounding
scaring
shocking
scary
skin-crawling
terrible
terrifying
terrorsome