abettor (n.)
- accessory
- accomplice
- actuator
- admirer
- advocate
- aficionado
- angel
- animator
- apologist
- backer
- buff
- champion
- coax
- coaxer
- coconspirator
- cohort
- confederate
- conspirator
- defender
- dependence
- endorser
- energizer
- exponent
- fan
- gadfly
- galvanizer
- impeller
- inducer
- inspirer
- lover
- mainstay
- maintainer
- mover
- partisan
- patron
- persuader
- pleader
- promoter
- prompter
- protagonist
- reliance
- second
- seconder
- sectary
- sider
- spark
- sparker
- sponsor
- stalwart
- standby
- support
- supporter
- sustainer
- sympathizer
- tempter
- upholder
- votary
- well-wisher
- wheedler
