indistinctly vs dimly

indistinctly and dimly both are adverbs.

Word	Noun	Adjective	Verb	Adverb
indistinctly	No	No	No	Yes
dimly	No	No	No	Yes

As adverbs, indistinctly and dimly are synonyms defined as:

indistinctly (adverb)	dimly (adverb)
in a dim indistinct manner	in a dim indistinct manner
	in a manner lacking interest or vitality
	with a dim light