Yea-sayers are people who are always in agreement and support of a particular idea or opinion. They are usually seen as being positive and optimistic, and they often encourage others to join in with their enthusiasm. The term 'yea-sayers' is derived from the Old English word 'gea-sceawere, ' which means 'one who looks favorably upon something.' The crossword solution for the term 'yea-sayers' is 'PROS, ' which stands for 'professionals' or 'EXPERTS.'