last resort

final escape; last plan, final resource

Last resort refers to an action that is used only when no other option remains.
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Noun
1. French for `worst going'
(synonym) pis aller
(hypernym) expedient

last hope for assistance, last chance to succeed I will call the police only as a last resort - only when I'm desperate.

Synonyms and related words:
action, ad hoc measure, answer, artifice, contrivance, countermove, coup, course of action, demarche, dernier ressort, device, dodge, effort, expedient, gimmick, hope, improvisation, jury-rig, jury-rigged expedient, last expedient, last shift, makeshift, maneuver, means, measure, move, pis aller, recourse, resort, resource, shake-up, shift, solution, step, stopgap, stratagem, stroke, stroke of policy, tactic, temporary expedient, trick, trump, working hypothesis, working proposition