Abet

Abet

Verb

- assist someone in doing something wrong, esp in committing a crime or an offense
- to actively encourage or second

Synonyms:

help, aid, assist, promote

Usage:

1. He abetted the thief in the robbery
2. It seems that some countries in the world are abetting terrorism and hindering world peace

Antonyms:

hinder, discourage

Related forms:
Noun: abettal, abetment
Adjective: unabetting