copious

As a determiner many

is an indefinite large number of.

As a pronoun many

is a collective mass of people.

As a noun many

is a multitude; a great aggregate; a mass of people; the generality; the common herd.

As an adjective copious is

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

Bulky is a related term of copious.

As adjectives the difference between bulky and copious

is that bulky is being large in size, mass, or volume while copious is great in quantity or number, profuse, abundant; taking place on a large scale.

Diffuse is a synonym of copious.

As a verb diffuse

is .

As an adjective copious is

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

As adjectives the difference between huge and copious

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

Copious is a related term of prolix.

As adjectives the difference between copious and prolix

is that copious is great in quantity or number, profuse, abundant; taking place on a large scale while prolix is tediously lengthy.

Munificent is a synonym of copious.

As adjectives the difference between copious and munificent

is that copious is great in quantity or number, profuse, abundant; taking place on a large scale while munificent is very liberal in giving or bestowing.

As adjectives the difference between considerable and copious

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

As adjectives the difference between numerous and copious

is that numerous is indefinitely large numerically, many while copious is great in quantity or number, profuse, abundant; taking place on a large scale.

Copious is a synonym of extensive.

As adjectives the difference between copious and extensive

is that copious is great in quantity or number, profuse, abundant; taking place on a large scale while extensive is in the nature of an extent, wide, widespread.

Multitudinous is a related term of copious.

As adjectives the difference between multitudinous and copious

is that multitudinous is existing in great numbers; innumerable while copious is great in quantity or number, profuse, abundant; taking place on a large scale.