Below are possible answers for the crossword clue Not negotiable.
4 letter answer(s) to not negotiable
FIRM
(of especially a person's physical features) not shaking or trembling; "his voice was firm and confident"; "a firm step"
become taut or tauter; "Your muscles will firm when you exercise regularly"; "the rope tautened"
Company
make taut or tauter; "tauten a rope"
marked by firm determination or resolution; not shakable; "firm convictions"; "a firm mouth"; "steadfast resolve"; "a man of unbendable perseverence"; "unwavering loyalty"
not liable to fluctuate or especially to fall; "stocks are still firm"
not soft or yielding to pressure; "a firm mattress"; "the snow was firm underfoot"; "solid ground"
not subject to revision or change; "a firm contract"; "a firm offer"
possessing the tone and resiliency of healthy tissue; "firm muscles"
Rigid
securely established; "holds a firm position as the country's leading poet"
securely fixed in place; "the post was still firm after being hit by
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