Not negotiable; not subject to negotiation.(adjective)
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Use "non-negotiable" in a sentence
"Meanwhile, President Barack Obama was among the many leaders stepping up the pressure, issuing what he called a "non-negotiable ultimatum" to Gadhafi to immediately cease further military action against his own citizens and restore basic utility services to areas recently held by rebels."
"It was that office's zeal, Ouimet said, that led to her being offered - and then accepting - what she described as a "non-negotiable" agreement to retire about halfway through her seven-year appointment."
"And Iran absolutely has rejected that as non-negotiable repeatedly."