Expressing pleasure can be done in a variety of ways. One way is to use vocal expressions such as 'aah' or 'SMILE'. The term 'express pleasure' can be represented by the crossword solutions 'aah' (3 letters) and 'SMILE' (5 letters). Aah is an expression of joy or delight, while smiling is a facial expression that conveys happiness. Both of these expressions are used to show pleasure and can be used in different contexts.