The term 'THAT's Great!' is an expression of joy and approval, often used to show enthusiasm for something. The crossword solutions for this term are COOL (4 letters), GOODY (5 letters), SUPER (5 letters), AWESOME (7 letters), OHBOY (5 letters), ARRIBA (6 letters), YIPPEE (6 letters), YUMYUM (6 letters), and ILOVEIT (7 letters). All of these words are exclamations of joy and approval, and can be used to express enthusiasm for something.