artificial
secondary
unreal
additional
advocate
agent
alter ego
alternate
alternative
amicus curiae
analogy
another
apology
attorney
backup
backup man
bit player
champion
change
change for
changeling
commute
comparison
compound for
copy
counterfeit
delegate
deputy
dernier ressort
displace
double
double for
dub in
dummy
duplicate
equal
equivalent
ersatz
exchange
executive officer
expediency
expedient
exponent
extra
fake
false
father figure
father image
figurant
figurante
figurehead
interchange
substituted
substitutes
substituting
answer
butter
compromise
demand
excuse
explanation
food
imitation
ingredient
meal
one
opportunity
preparation
product
remedy
resource
solution
taste