critical flaw

Fundamental design defect

A critical flaw is a defect so fundamental that it undermines the whole—a fatal weakness that cannot be compensated for by other strengths.

The phrase appears in engineering, game design, and argumentation: The bridge's critical flaw was discovered too late.

In storytelling, a character's critical flaw often drives their downfall.

Critical here means decisive rather than analytical.

Related

security hole · defect · bug · glitch · crack · fissure · breakdown · breaking point · system failure · failure · error · mistake · oversight · loophole · breach · corruption · compromise · exploit

Opposites
severity/impact

critical flawnitpick

Find petty faults

minor inconvenience

positive vs negative attribute

critical flawcore strength

Torso muscular capacity

saving grace · redeeming quality · strong suit · crowning achievement · competitive advantage

perfection vs defect

critical flawperfection

Absence of any fault

flawless execution · flawlessness · soundness · integrity · structural integrity

Family

critical, critically, critic, critics, criticism, criticisms, criticize, criticizes, criticized

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Negative · Everyday, not technical · Rated G