An essential, unavoidable, or urgently necessary thing to be done.

Latin imperativus (commanded), from imperare (to command)

Necessity Obligation Exigency
Option Choice Triviality
"Decarbonising the power sector is now a developmental imperative, not merely an environmental aspiration."

Use in Essay introductions and GS3 answers to elevate a policy goal to the level of an urgent necessity.

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