perilous Definition

precarious, dangerous, parlous, unsafe, touch-and-go, treacherous, risky, hazardous, challenging, daring, serious, critical, grave, sinister, hazard, harmful, dicey, dire, tricky, disastrous, inhospitable, arduous, hellish, unpredictable, foolhardy, calamitous, unstable, grim, difficult, tortuous, unforgiving, troublesome, unpromising, nightmarish, pathless, untenable, uncertain, unenviable, chancy, stormy, improbable, tumultuous, ominous, deadly, scary, unwise, precipitous, unpleasant, dreadful, frightful, worrisome, periculous, daunting, turbulent, unpropitious, harrowing, chaotic, tenuous, frightening, bleak, problematical, murky, terrifying, problematic, torturous, rockiest, bumpy, unnerving, slippery, uncharted, fragile, roughest, unchancy, unsettling, troubling, wrenching, unchartered, delicate, hopeless, complicated, stressful, unpalatable, tense, propitious, grueling, discriminous, dangerful, painful, hazardable, peculiar, bizarre, great duckweed, wobbly, uncongenial, desperate, starkest, unnavigable, unpopular, darkest, discomforting,