The term 'buck up' is an idiom that means to become more courageous or determined in the face of difficulty. The crossword solutions for this term include COURAGE (7 letters), CONSOLE (7 letters), CHEER (5 letters), ENCOURAGE (9 letters), COMFORT (7 letters), ELATE (5 letters), HEARTEN (7 letters), EMBOLDEN (8 letters), takeheart (9 letters), and INVIGORATE (10 letters). These words all have similar meanings, and they can be used to describe the act of bucking up. COURAGE, for example, is a quality that allows someone to face difficult situations with strength and determination. CONSOLE is an action that involves providing emotional support and COMFORT to someone who is struggling. CHEER is an expression of encouragement and enthusiasm. ENCOURAGE is an action that involves offering support and reassurance to someone. COMFORT is an action that involves providing emotional support and solace to someone. ELATE is an emotion that is characterized by feelings of joy and excitement. HEARTEN is an action that involves providing someone with hope and COURAGE. EMBOLDEN is an action that involves giving someone the COURAGE to do something. Takeheart is an expression that encourages someone to remain hopeful and optimistic. Finally, INVIGORATE is an action that involves providing someone with energy and enthusiasm.