The term 'ACTS THE SIREN' can be solved by the crossword solutions 'ENTICES' (7 letters) and 'TEMPTS' (6 letters). The term 'SIREN' is derived from Greek mythology, where it was used to describe a creature that had the head of a woman and the body of a bird. In modern usage, a SIREN is often used to refer to a seductive woman who ENTICES or TEMPTS men with her beauty and charm. Therefore, the term 'ACTS THE SIREN' can be interpreted as 'ENTICING' or 'TEMPTING' someone.