1. the state or quality of being insufficient or not good enough
2. a feeling of not being capable or worthy enough

Examples

• The inadequacy of the school’s funding became apparent when textbooks fell apart.
• She struggled with feelings of inadequacy after failing the exam.
• The report highlighted the inadequacy of current safety measures.
• His sense of inadequacy prevented him from applying for the promotion.
• The inadequacy of the bridge’s design led to its collapse.
• Many students experience inadequacy when comparing themselves to others.
• The inadequacy of our supplies forced us to cancel the project.