Definition of “great” - Learner’s Dictionary

great

adjective uk us /ɡreɪt/
EXCELLENT

A1 very good:

We had a great time.
I've had a great idea!
IMPORTANT
LARGE

A2 large in amount, size, or degree:

a great crowd of people
EXTREME
great big/long, etc

B2 very big/long, etc:

I gave her a great big hug.
a great many
greatness noun [ U ]
→ See also set great store by sth , the best/greatest thing since sliced bread , go to great lengths to do sth

(Definition of “great adjective” from the Cambridge Learner's Dictionary © Cambridge University Press)