A flirtatious overture is a romantic gesture or action that is intended to show someone that you are interested in them. It can be anything from a compliment to a more direct approach such as asking someone out on a date. The term 'flirtatious overture' is derived from the word 'FLIRT, ' which means to behave amorously without serious intent. The crossword solution for this term is PASS, which is an acronym for 'positively acknowledge someone's advances and signals.'