Synonyms to periculous

alarming, awing, bad, chilling, critical, dangerous, dangersome, daunting, deterrent, deterring, disconcerting, discouraging, disheartening, dismaying, disquieting, explosive, fear-inspiring, fearful, fearsome, fraught with danger, frightening, frightful, jeopardous, menacing, overawing, parlous, perilous, scaring, scary, serious, startling, threatening, ugly, OK, abhorrent, abominable, abomination, ace-high, ailing, amiss, apocalyptic, arrant, atrocious, atrocity, bad for, bad-smelling, badly, baleful, bane, baneful, bang-up, barfy, base, befoulment, below par, black, blamable, blameworthy, blight, blue, bodeful, boding, bonzer, boss, brackish, bully, bum, but good, cankered, careless, carious, castrated, cloying, contaminated, cool, corking, corrupt, corruption, crackerjack, crappy, crestfallen, criminal, crippled, critically ill, crying evil, damage, damaging, damnable, dandy, dark, decayed, decomposed, defective, deficient, defilement, dejected, deleterious, delicious, depressed, despaired of, despoliation, destruction, detriment, detrimental, dire, disab