peculiarly vs inexplicably

peculiarly and inexplicably both are adverbs.

Word	Noun	Adjective	Verb	Adverb
peculiarly	No	No	No	Yes
inexplicably	No	No	No	Yes

As adverbs, peculiarly and inexplicably are synonyms defined as:

peculiarly and inexplicably: in a manner differing from the usual or expected

Other synonyms of peculiarly include curiously, oddly.

peculiarly (adverb)	inexplicably (adverb)
in a manner differing from the usual or expected	in a manner differing from the usual or expected
uniquely or characteristically
to a distinctly greater extent or degree than is common