countless

Immense is a related term of countless.

As adjectives the difference between immense and countless

is that immense is huge, gigantic, very large while countless is too many to count; innumerable or incalculable.

Abounding is a related term of countless.

As adjectives the difference between abounding and countless

is that abounding is ample, plenty, abundant while countless is too many to count; innumerable or incalculable.

As a verb abounding

is .

Ample is a related term of countless.

As adjectives the difference between ample and countless

is that ample is large; great in size, extent, capacity, or bulk; spacious; roomy; widely extended while countless is too many to count; innumerable or incalculable.

As adjectives the difference between countless and manifold

is that countless is too many to count; innumerable or incalculable while manifold is various in kind or quality, diverse.

As a noun manifold is

a copy made by the manifold writing process.

As an adverb manifold is

many times; repeatedly.

As a verb manifold is

to make manifold; multiply.

As adjectives the difference between profuse and countless

is that profuse is in great quantity or abundance while countless is too many to count; innumerable or incalculable.

As a verb profuse

is to pour out; to give or spend liberally; to lavish; to squander.

Titanic is a related term of countless.

As adjectives the difference between titanic and countless

is that titanic is of, or relating to the titans, a race in ancient mythology while countless is too many to count; innumerable or incalculable.

As a proper noun titanic

is , a cruise liner that sank on its maiden voyage on april 14, 1912 after colliding with an iceberg.

Countless is a related term of copious.

As adjectives the difference between countless and copious

is that countless is too many to count; innumerable or incalculable while copious is great in quantity or number, profuse, abundant; taking place on a large scale.

Countless is a related term of measureless.

As adjectives the difference between countless and measureless

is that countless is too many to count; innumerable or incalculable while measureless is not measured because it is so large it is difficult or impossible to do so.

Enormous is a related term of countless.

As adjectives the difference between enormous and countless

is that enormous is (obsolete)  deviating from the norm; unusual, extraordinary while countless is too many to count; innumerable or incalculable.

Great is a synonym of countless.

As a verb great

is .

As an adjective countless is

too many to count; innumerable or incalculable.