Immorally is a related term of nefariously.
As adverbs the difference between immorally and nefariously
is that immorally is in an immoral manner, not morally, wrongly while nefariously is in a nefarious manner.
immorally
English
Adverb
(
en adverb)
In an immoral manner, not morally, wrongly.
- He was reluctant to behave immorally.
Antonyms
* morally