The term 'Jolly Good' is an expression of approval or satisfaction, often used in British English. The crossword solutions for this term are SPLENDID (8 letters), SPIFFING (8 letters), and CAPITAL (7 letters). SPLENDID is an adjective meaning very good or excellent, SPIFFING is an adjective meaning very smart or stylish, and CAPITAL is an adjective meaning excellent or first-rate. Together, these three words provide a comprehensive description of the term 'Jolly Good'.