extensively

As adverbs the difference between much and extensively

is that much is to a great extent while extensively is in an extensive manner, widely.

As a determiner much

is large, great.

As a pronoun much

is a large amount or great extent.

As an adverb extensively

is in an extensive manner, widely.

As an adjective comprehensive is

broadly or completely covering; including a large proportion of something.

As a noun comprehensive is

a comprehensive school.

As adverbs the difference between extensively and loosely

is that extensively is in an extensive manner, widely while loosely is in a loose manner.

As adverbs the difference between extensively and highly

is that extensively is in an extensive manner, widely while highly is in a high or esteemed manner.

As adverbs the difference between considerably and extensively

is that considerably is significantly; to a degree worth considering while extensively is in an extensive manner, widely.

As adverbs the difference between extensively and enormously

is that extensively is in an extensive manner, widely while enormously is extremely, greatly: to an enormous degree.

As adverbs the difference between largely and extensively

is that largely is in a widespread or large manner while extensively is in an extensive manner, widely.

As adverbs the difference between comprehensively and extensively

is that comprehensively is in a comprehensive manner; completely; thoroughly; in an all-inclusive or wide-ranging fashion while extensively is in an extensive manner, widely.

As an adjective minimal

is the smallest possible amount, quantity, or degree.

As an adverb extensively is

in an extensive manner, widely.

As adverbs the difference between extensively and substantially

is that extensively is in an extensive manner, widely while substantially is in a strong substantial manner; considerably.