The term 'great quantity' can be expressed in many ways, including the crossword solutions of HEAP (4 letters), MUCH (4 letters), LOTS (4 letters), RAFT (4 letters), SCAD (4 letters), ARMY (4 letters), TON (3 letters), SLEW (4 letters), TONS (4 letters), OCEAN (5 letters), SCADS (5 letters), and oodlesandoodles (15 letters). HEAP, MUCH, and LOTS are all synonyms for a large amount, while RAFT and ARMY refer to a large group of people or things. TON and TONS are units of measurement for a large amount, and SLEW is an informal term for a large number. OCEAN and SCAD are both terms for a vast amount of something, and oodlesandoodles is an expression used to emphasize a great quantity.