naturally

As an adverb naturally

is in a natural manner.

As an adjective undefined is

lacking a definition or value.

As adverbs the difference between naturally and automatically

is that naturally is in a natural manner while automatically is in an automatic manner.

As adverbs the difference between originally and naturally

is that originally is as it was in the beginning while naturally is in a natural manner.

As adverbs the difference between naturally and surely

is that naturally is in a natural manner while surely is without fail.

As adverbs the difference between deliberately and naturally

is that deliberately is intentionally, or after deliberation; not accidentally while naturally is in a natural manner.

As adverbs the difference between fluently and naturally

is that fluently is in a fluent manner, as expressing oneself easily, especially in a foreign language while naturally is in a natural manner.