1.
vadio a (faineant, indolent, lazy, otiose, slothful, work-shy) disinclined to work or exertion.

2.
vadio n (bully, tough, hooligan, ruffian, roughneck, rowdy, yob, yobo, yobbo) a cruel and brutal fellow.

3.
vadio n (hood, hoodlum, goon, punk, thug, tough, toughie, strong-armer) an aggressive and violent young criminal.

4.
vadio n (apache) a Parisian gangster.