1: To act in a dysfunctional or out-of-pocket manner; unruly; 2: Someone whose actions could be considered as severely undistinguishable; possesing little or no class.
"I'm tired of Denise bringin' them ratchet ass kids around the house when I'm trynna work! Little heathens
always trynna tear shit up!"
"Ayy yo tell me why this bitch is down to let the whole team smash
"Cause she ratchet..."