great

1 great /ˈgreɪt/ adjective
greater; greatest
1 great
/ˈgreɪt/
adjective
greater; greatest
Britannica Dictionary definition of GREAT
1 
a  : very large in size : very big — usually used before a noun
b  — used in the names of animals that are larger than similar animals
2 
: very large in amount or extent
3 
a  : very strong
b  — used for emphasis before a noun that describes someone
c  : very important
d  : very bad : very extreme or severe
4 
: better than good: such as
a  : of the highest quality
b  : very important and admired
c  : very talented or successful
d  informal : very enjoyable, favorable, etc. : excellent
— often used in the phrases feel great and look great
— sometimes used in an ironic way to describe something that is very bad or upsetting
5 
always used before a noun : more distant in a family relationship by one generation
— usually used in combination

a great one for

informal
◊ If you are a great one for (doing) something, you do it often or enjoy doing it very much.

go great guns

— see 1gun

go to great pains

— see 1pain

great with child

old-fashioned + literary

no great shakes

— see 2shake

— greatness

noun [noncount]
2 great /ˈgreɪt/ adverb
greater; greatest
2 great
/ˈgreɪt/
adverb
greater; greatest
Britannica Dictionary definition of GREAT
informal
: very well
3 great /ˈgreɪt/ noun
plural greats
3 great
/ˈgreɪt/
noun
plural greats
Britannica Dictionary definition of GREAT
[count]
: a very successful or admired person — usually plural