أخطر

Etymology 1
of and.

Adjective

 * 1) more dangerous, riskier; most dangerous, riskiest
 * 2) more serious; most serious
 * 3) more important; most important
 * 4) more eminent; most eminent
 * 1) more eminent; most eminent

Verb

 * 1) to inform, to notify, to alert