Definition
An exigency is a demand made by circumstances — an urgent need that a situation forces on you, leaving little room to deliberate. It comes from Latin exigere, 'to demand or drive out', and that pressure is its essence: an exigency does not ask, it requires. The word is formal and often plural — 'the exigencies of war', 'the exigencies of the moment' — and it always points outward, to conditions beyond your control that suddenly dictate what must be done now rather than later.
Examples
Collocations
the exigencies of war·financial exigency·the exigencies of the moment·meet an exigency·in times of exigency
Synonyms
urgency·emergency·crisis·necessity·pressing demand
Word family
exigent (adjective)·exigencies (plural noun)
In TOEFL & IELTS
A formal, high-register noun for IELTS Writing on crisis, governance and decision-making, usually in the plural ('the exigencies of modern life'). Two stress patterns are both accepted — EK-si-jen-see and ig-ZIJ-en-see — so don't be thrown hearing either. Pairs almost ritually with 'of war' and 'of the moment'.