Definition of "unfirm" [un•firm]

• Infirm (adjective)

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• "I felt like my stomach had turned to Jell-O inside me, all quivery and unfirm."
• "As far as supplying energy to the neighbouring countries is concerned this amounts to approximately 4% of the energy generated and most of this relates to “unfirm contractual” obligations, which means essentially that when the country experiences a shortage we very quickly stop electricity supplies to our neighbours."
• "Lack of expansion has also resulted in networks being overloaded and capacity becoming increasingly unfirm."