overcrowd

This term carries a strong negative connotation, emphasizing a breach of capacity or a compromise in safety and comfort. It describes a state of excess that transforms a functional space into one that is oppressive or hazardous, often used in the context of urban planning, public transport, or event management.

While similar to "crowd," this word specifically denotes the act of exceeding a limit. It implies a transition from a populated area to one that is over-saturated, shifting the focus from the presence of people to the problem of too many people.