alternative

Noun
  1. One of a number of things from which only one can be chosen (synset 105798949)
    "what option did I have?"; "there is no other alternative"; "my only choice is to refuse"
Adjective
  1. Serving or used in place of another (synset 301859862)
    "an alternative plan"
  2. Necessitating a choice between mutually exclusive possibilities (synset 300566932)
    "alternative possibilities were neutrality or war"
  3. Pertaining to unconventional choices (synset 300611045)
    "an alternative life style"

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