unprincipled
Definitions
Lacking moral principles; not guided by a sense of right and wrong.
Acting in a dishonest or unfair manner to achieve one's goals.
Examples
The unprincipled politician was willing to say anything to secure more votes.
He was fired for his unprincipled behavior and lack of integrity in the workplace.
Synonyms
dishonest unscrupulous corrupt immoral deceitful dishonorable crooked