Synonyms of alarming in English:

alarming


See US English definition of alarming

See UK English definition of alarming

See Spanish definition of alarmante

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