As adjectives the difference between unscrupulous and unprincipled
is that unscrupulous is without scruples; immoral while unprincipled is lacking moral values.
unscrupulous
English
Adjective
(
en adjective)
Without scruples; immoral.
Contemptuous of what is right or honorable.
Antonyms
* scrupulous
* ethical
* upstanding
unprincipled
English
Synonyms
*licentious, immoral
Related terms
*principled
*principle
References
*Oxford English Dictionary