Synonimem słowa ,, big'' jest ,,large''?

Large, great, huge, gigantic, massive, enormous, colossal, immense.

To tylko część :)

Warto zaopatrzyć się w "The Penguin Dictionary of English Synonyms and Antonyms".

Usage note: BIG / LARGE / GREAT


These adjectives are frequently used with the following nouns:

BIG ~
man
house
car
boy
dog
smile
problem
surprise
question
difference

LARGE ~
numbers
part
area
room
company
eyes
family
volume
population
problem

GREAT ~
success
majority
interest
importance
difficulty
problem
pleasure
beauty
artist
surprise

LARGE is more formal than BIG and should be used in writing unless it is in an informal style. It is not usually used to describe people, except to avoid saying ‘fat’.
GREAT often suggests quality and not just size. Note also the phrases: a large amount of ◇ a large number of ◇ a large quantity of ◇ a great deal of ◇ in great detail ◇ a person of great age.