Definition

Characterized by allowing others to take advantage of you, make decisions for you, or treat you poorly without standing up for yourself or your rights. The opposite of assertive, and often to your own detriment.

Example Usage

Stop being so passive about his disrespect—you need to tell him how you actually feel.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=passive&defid=13015)