Justly
Part of speech: adverb
Definition: In a just or fair manner; of great justice.
Example sentence: We will receive not what we idly wish for but what we justly earn. Our rewards will always be in exact proportion to our service.
Rightly
Part of speech: adverb
Definition: Aright, in a right manner.
Example sentence: In the meanest are all the materials of manhood, only they are not rightly disposed.