abettor
[noun]
Synonyms: confederate, accessory, accomplice, coconspirator, conspirator

[TahlilGaran] English Synonym Dictionary ▲

abettor noun. [ǝ'bɛtǝ] LME.
[Anglo-Norman abettour, formed as ABET verb + -OR.]
1. A person who abets an offender. (In Law preferred to ABETTER.) LME.

2. A supporter, an adherent, an advocate, (now almost always of something or someone undesirable or reprehensible). L16.

[TahlilGaran] English Dictionary ▲