ALTERNATIVE

/ɒl.ˈtɜː(ɹ).nə.tɪv/ ► audio Scrabble 14 Words With Friends 17

Definition

noun one of a number of things from which only one can be chosen. — synonyms: option, choice
adjective serving or used in place of another. — synonyms: alternate, substitute
adjective necessitating a choice between mutually exclusive possibilities.
adjective pertaining to unconventional choices.