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.
Formal vs Informal Groups. Man is a social animal and cannot live in isolation. Being gregarious and compassionate, he needs the company of others to share his feelings and emotions. He prefers to live in a society, and even the family he lives in is a sub group within this large group. A group can be defined as a unit, whether formal or informal, where the chief characteristic is that all members have a sense of belonging and feel proud of being a part of the group. Members of a group interact through mutually agreed norms and aware of each other as members.