Definition of insecure. 1  1 : not confident or sure : uncertain feeling somewhat insecure of his reception. 2  2 : not adequately guarded or sustained : unsafe an insecure investment. 3  3 : not firmly fastened or fixed : shaky the hinge is loose and insecure.
For men, semi-formal attire means wearing a full suit, with vest optional. A tie, either bow or straight, should be worn, and the shirt should be a simple button down. Suit fabric choices are primarily wool gabardine or cashmere. However, a wool blend will do.
Semi-formal: Semi-formal wedding attire for men usually translates to a full suit and dress shirt with a tie. In terms of fabrics, wool or wool-blends work best. But depending on the weather of the weddingâs location, seersucker or linen fabrics may be appropriate; however, we suggest you inquire beforehand.