1. in a way that shows lack of confidence or certainty about oneself
2. in a way that is not safe, stable, or protected

Examples

• She smiled insecurely when meeting new people at the party.
• The ladder was positioned insecurely against the wall.
• He spoke insecurely about his qualifications during the interview.
• The tent was insecurely fastened and blew away in the wind.
• The new student looked around insecurely on her first day.
• The bridge was insecurely built and needed immediate repairs.
• She held onto the railing insecurely as she climbed the stairs.