explicitly

Explicitely is often a misspelling of explicitly.

Explicitely has no English definition.

As an adverb explicitly is

in an explicit manner.

As adverbs the difference between extensively and explicitly

is that extensively is in an extensive manner, widely while explicitly is in an explicit manner.

As adverbs the difference between explicitly and declaredly

is that explicitly is in an explicit manner while declaredly is with a formal declaration; avowedly, explicitly, professedly.