IPA: /ˈkraʊdɪdnəs/
KK: /ˈkraʊdɪdnəs/
The condition of having too many people or things in a space, making it feel full or packed.
The crowdedness of the subway during rush hour can be overwhelming.
Crowdedness is formed from "crowd" (from Old English "crūdan", meaning to press or push) and "-edness" (a suffix indicating a state or condition). The word describes the state of being full of people or things pressed together.
Think of 'pressing together' ('crūdan') to remember that 'crowdedness' means a state of being full of people or things.