Synonyms For "Dangerous" :

1 syllable:

grave, wild

2 syllables:

breakneck, chanceful, chancy, dicey, dodgy, grievous, parlous, risky, severe, unsafe

3 syllables:

critical, desperate, hazardous, insecure, mordacious, perilous, serious, treacherous

4 syllables:

insidious, precarious, suicidal, vulnerable

5 syllables:

unreliable