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 or cocktail attire doesnât just mean a little black dress. Today you can show your personal style with a range of ensembles from dresses to tuxedo pants. Once you know your options, the most important elements to creating your best semi-formal outfit are dressing for your body, the occasion and the season.