pull the pin

Trigger the explosive

Pull the pin means to quit or resign, especially abruptly or decisively.

The image comes from pulling the pin on a grenade—once done, there's no going back.

In Australian and New Zealand English particularly, it describes leaving a job or withdrawing from a commitment: After twenty years, she finally pulled the pin.

The phrase can also mean to activate something explosive or irreversible: He pulled the pin on the whole deal when he leaked it to the press.

Related

finalize · risk-taking · irrevocable · leap of faith · inevitability · moment of truth · walk away · cut the cord · point of no return · no turning back · closure · transition · fuse · trigger · explosion · turning point · courage · trigger mechanism

Opposites
commitment to continue

pull the pinstay the course

Continue despite difficulties

double down · stick with it · see it through · hang in there · recommit

engagement initiation

pull the pinsign up

Formally agree to participate

jump in · enlist · commit · join up · dive in

STABILITY VS DISRUPTION (literal grenade sense)

pull the pindefuse

Render harmless

disarm · deactivate · neutralize · secure · stand down

Family

pull, pulls, pulled, pulling, puller, pin, pins, pinned, pinning

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Concrete · Everyday, not technical · Rated PG