Synonyms of alarming in English:

alarming


See definition of alarming

adjective

1‘infant mortality is rising at an alarming rate’

SYNONYMS
frightening, startling, unnerving, shocking, hair-raising
distressing, upsetting, disconcerting, perturbing, dismaying, disquieting, daunting, disturbing, harrowing
fearsome, dreadful, monstrous, forbidding, appalling, chilling, terrifying, petrifying
informal scary
ANTONYMS

reassuring