ringer (n.)
- agent
- alternate
- alternative
- analogy
- backup
- bluff
- bluffer
- change
- changeling
- charlatan
- comparison
- copy
- counterfeit
- deputy
- double
- dummy
- equal
- equivalent
- ersatz
- exchange
- fake
- faker
- fill-in
- fraud
- ghost
- ghostwriter
- humbug
- imitation
- impersonator
- impostor
- makeshift
- malingerer
- metaphor
- metonymy
- mountebank
- personnel
- phony
- picture
- portrait
- poser
- poseur
- pretender
- proxy
- quack
- relief
- replacement
- representative
- reserves
- secondary
- sham
- shammer
- sign
- simulacrum
- spit
- stand-in
- sub
- substitute
- substitution
- succedaneum
- supplanter
- surrogate
- symbol
- synecdoche
- token
- understudy
- vicar
- vice-regent