plan C

Backup's own backup

A backup to the backup—a third option when both plan A and plan B have failed or become unavailable.

The letter can extend further (plan D, plan E) as contingencies multiply, though the humor of escalating letters often acknowledges that improvisation has replaced genuine planning: We're on plan C at this point, just making it up as we go.

Related

think on your feet · hail mary · detour · insurance policy · disaster recovery · pivot · emergency protocol · risk assessment · crisis management · safety net · worst case scenario · back to the drawing board · novel ideas · cost-benefit analysis · bag · rush · paper · SWOT analysis

Opposites
preference/priority

plan Cplan A

Preferred course of action

first choice · top priority · best-case scenario · ideal solution · plan B

certainty/reliability

plan Csure thing

Guaranteed outcome or agreement

safe bet · certainty · slam dunk · no-brainer

contingency depth

plan Cplan A

Preferred course of action

opening gambit · last resort · nuclear option · Hail Mary

Phrases
Family

plan, plans, planned, planning, planner, planners, plane, planar

Familiarity
Top 200,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G