Old French · suffix
-os
characterized by
Words sharing this root
adventurousWilling to try or involving exciting, unfamiliar, or risky experiences.chivalrousShowing or reflecting the courtesy and honor traditionally expected of knights.dangerousAble or likely to cause harm or injury.heinousShockingly evil or morally wrong.languorousPleasantly relaxed and lacking energy.venomousProducing poison delivered through a bite, sting, or spine.