Nonnegotiable (adjective)

Not able to be negotiated or altered.

Origin:

Non- + negotiable.

Examples:

1. The terms of the contract are nonnegotiable.
2. The company's policy is nonnegotiable and must be followed.
3. The price is nonnegotiable, it is fixed and cannot be changed.
4. The nonnegotiable points of the agreement must be respected.
5. The issue is nonnegotiable, it is not open for discussion or debate.