As adverbs the difference between unmistakably and unmistakenly
is that unmistakably is in an unmistakable manner; unquestionably while unmistakenly is in an unmistaken way; validly or accurately.
unmistakably
English
Adverb
(-)
In an unmistakable manner; unquestionably.
unmistakenly
English
Adverb
(-)
In an unmistaken way; validly or accurately.