adj Having much size; large.
adj (of an abstract noun) Much, more than usual.
adj (informal, Britain) Intensifying a word or expression, used in mild oaths.
adj (informal) Very good; excellent; wonderful; fantastic.
adj Important, consequential.
adj (qualifying nouns of family relationship) Involving more generations than the qualified word implies — as many extra generations as repetitions of the word great (from 1510s). [see Derived terms]
adj (obsolete, postpositive, followed by 'with') Pregnant; large with young; full of.
adj (obsolete, except with 'friend' and similar words such as 'mate','buddy') Intimate; familiar.
adj (applied to actions, thoughts and feelings) Arising from or possessing idealism; admirable; superior; commanding; heroic; illustrious; eminent.
adj Impressive or striking.
adj Much in use; favoured.
adj (applied to persons) Endowed with extraordinary powers; of exceptional talents or achievements; able to accomplish significant results.
adj Doing or exemplifying (a characteristic or pursuit) on a large scale; active or enthusiastic.
n A person of major significance, accomplishment or acclaim.
n (music) The main division in a pipe organ, usually the loudest division.
n (in combinations such as "two-greats", "three-greats" etc.) An instance of the word "great" signifying an additional generation in phrases expressing family relationships.
adv (informal) Very well (in a very satisfactory manner).