alternative (n.)
- agent
- alternate
- analogy
- backup
- change
- changeling
- choice
- comparison
- contingency
- copy
- counterfeit
- deputy
- discretion
- double
- druthers
- dummy
- election
- elective
- equal
- equivalent
- ersatz
- exchange
- fake
- fill-in
- ghost
- ghostwriter
- imitation
- loophole
- makeshift
- metaphor
- metonymy
- mock
- option
- personnel
- phony
- pinch
- pleasure
- possibility
- preference
- pretext
- proxy
- relief
- replacement
- replacing
- representative
- reserve
- reserves
- ringer
- secondary
- selection
- sign
- spare
- stand-in
- stopgap
- sub
- substitute
- substitution
- succedaneum
- supplanter
- surrogate
- symbol
- synecdoche
- temporary
- token
- understudy
- utility
- variant
- vicar
- vice-regent
- voluntary
alternative (adj.)
- additional
- alternate
- another
- attainable
- change
- choice
- counterfeit
- different
- discretional
- disjunctive
- double
- dummy
- elective
- equal
- equivalent
- ersatz
- exchangeable
- fake
- imitation
- interchangeable
- makeshift
- mock
- optional
- personnel
- phony
- provisional
- representative
- secondary
- sign
- spare
- substitute
- surrogate
- temporary
- tentative
- token
- utility
- variant
- vicarious
- volitional
- voluntary