indispensable

Used to strongly emphasize that something is essential.

To be essential or absolutely necessary.

To change from being non-essential to being essential.

To be shown to be essential over time or through experience.

To believe or judge someone or something to be essential.

To cause someone or something to become essential.

Indicates the person, group, or thing that requires something essential.

Indicates the purpose or activity for which something is essential.

Indicates the context or area in which something is essential.