1. (adj) dangerous, unsafe
involving or causing danger or risk; liable to hurt or harm
Synonyms: serious, insecure, severe, unsafe, life-threatening, dangerous, grievous, grave Antonyms: safe and sound, risk-free, fail-safe, off the hook(p), unhazardous, noncritical, unhurt, safe, riskless, noncrucial
2. (adj) dangerous, grave, grievous, serious, severe, life-threatening
causing fear or anxiety by threatening great harm
Synonyms: severe, sober, serious, wicked, stark, unsafe, terrible, hard, spartan, stern, heavy, unplayful, weighty, monstrous, grave, good, grievous, atrocious, sedate, flagitious, life-threatening, dangerous, knockout, austere, heartbreaking, heartrending, solemn Antonyms: risk-free, unhurt, safe and sound, safe, noncrucial, off the hook(p), noncritical, fail-safe, unhazardous, riskless
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