Defect

An imperfection or flaw in a work product that can cause it to fail to meet its requirements; also called fault or bug.

Syllabus chapters: 1

Sources: ISTQB® Certified Tester Foundation Level syllabus 4.0.1 and the official ISTQB® Glossary. Glossary content © International Software Testing Qualifications Board; source: glossary.istqb.org.