SILLY TRICKS is a term used to describe humorous and often mischievous behavior. The crossword solutions APERIES (7 letters), APERY (5 letters) and ANTICS (6 letters) all refer to this type of behavior. APERIES and APERY are both derived from the Greek word 'apaireo' which means to take away or to deceive, while ANTICS is derived from the Latin word 'ante' which means before. All three words can be used to describe silly tricks or pranks.