Synonyms and Antonyms of dangerous
- the soldiers were specially selected to go on a dangerous mission behind enemy lines
dicey, insecure, precarious, treacherous, uncertain
distressing, sickening, unpleasant
adverse, bad, baleful, baneful, deleterious, detrimental, evil, harmful, hurtful, ill, inimical, injurious, malignant, nasty, noxious, pernicious, pestilent
deadly, deathly, destructive, dire, fatal, fateful, fell, killer, lethal, mortal, murderous
- the common knowledge that smoking is dangerous to one's health hasn't stopped some people
adverse, bad, baleful, baneful, damaging, deleterious, detrimental, evil, harmful, hurtful, ill, injurious, mischievous, nocuous, noxious, pernicious, prejudicial, wicked
contagious, deadly, infectious, infective, pestiferous, pestilent, pestilential, poisonous, venomous
insidious, menacing, ominous, sinister, threatening
hazardous, imperiling (or imperilling), jeopardizing, parlous, perilous, risky, unsafe, unsound