Overhearty is an adjective that describes someone who is overly enthusiastic or overly confident. It is often used to describe someone who is too eager or too bold in their actions. The term is derived from the word 'HEARTY, ' which means strong and vigorous. The crossword solution for this term is 'ROBUST, ' which means strong and healthy. ROBUST is often used to describe something that is strong and resilient, and can be applied to people as well as objects.