Quick definitions from WordNet (alternative)
▸ noun: one of a number of things from which only one can be chosen ("There no other alternative")
▸ adjective: necessitating a choice between mutually exclusive possibilities
▸ adjective: pertaining to unconventional choices ("An alternative life style")
▸ adjective: allowing a choice ("An alternative plan")
▸ Also see alternative
▸ noun: one of a number of things from which only one can be chosen ("There no other alternative")
▸ adjective: necessitating a choice between mutually exclusive possibilities
▸ adjective: pertaining to unconventional choices ("An alternative life style")
▸ adjective: allowing a choice ("An alternative plan")
▸ Also see alternative