1. lack of confidence in oneself; self-doubt
2. the state of being unsafe or unprotected; lack of safety or stability

Examples

• Her insecurity about her appearance made her avoid social gatherings.
• The teenager’s insecurity showed when he constantly sought approval from others.
• Job insecurity has increased during the economic downturn.
• The insecurity of the building’s foundation worried the engineers.
• Financial insecurity kept the family from making long-term plans.
• His insecurity about public speaking made him nervous before presentations.
• The region’s political insecurity has affected international investment.