copious

As adjectives the difference between big and copious

is that big is of great size, large while copious is great in quantity or number, profuse, abundant; taking place on a large scale.

As an adverb big

is in a loud manner.

As a noun big

is an important or powerful person; a celebrity; a big name.

As a verb big

is to praise or recommend.

Numberless is a related term of copious.

As adjectives the difference between numberless and copious

is that numberless is without number; having too many to count while copious is great in quantity or number, profuse, abundant; taking place on a large scale.

As adjectives the difference between copious and diffusive

is that copious is great in quantity or number, profuse, abundant; taking place on a large scale while diffusive is of, pertaining to, or caused by diffusion.

Copious is a related term of precious.

As an adjective copious

is great in quantity or number, profuse, abundant; taking place on a large scale.

As a proper noun precious is

.

As adjectives the difference between copious and gratuitous

is that copious is great in quantity or number, profuse, abundant; taking place on a large scale while gratuitous is given freely; unearned.

As adjectives the difference between copious and multifarious

is that copious is great in quantity or number, profuse, abundant; taking place on a large scale while multifarious is having multiplicity; having great diversity or variety; of various kinds; diversified; made up of many differing parts; manifold.

Populous is a related term of copious.

As adjectives the difference between populous and copious

is that populous is having a large population while copious is great in quantity or number, profuse, abundant; taking place on a large scale.

As adjectives the difference between copious and excessive

is that copious is great in quantity or number, profuse, abundant; taking place on a large scale while excessive is exceeding the usual bounds of something; extravagant; immoderate.

Verbose is a related term of copious.

As adjectives the difference between verbose and copious

is that verbose is abounding in words, containing more words than necessary long winded, or windy while copious is great in quantity or number, profuse, abundant; taking place on a large scale.

Wide is a related term of copious.

As adjectives the difference between wide and copious

is that wide is having a large physical extent from side to side while copious is great in quantity or number, profuse, abundant; taking place on a large scale.

As an adverb wide

is extensively.

As a noun wide

is (cricket) a ball that passes so far from the batsman that the umpire deems it unplayable; the arm signal used by an umpire to signal a wide; the extra run added to the batting side's score.