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.
Unsourced material may be challenged and removed. (April 2013) (Learn how and when to remove this template message) Formal wear (Canada, US) and formal dress wear (UK) are general terms for clothing suitable for formal social events, such as a wedding, formal garden party or dinner, dÃ©butante cotillion, dance, or race.