also: オルタナティヴ
na-adjective, noun
Loanword used as a noun or na-adjective, often in contexts like music, lifestyle, or choices that differ from the mainstream.
彼はオルタナティブな音楽が好きだ。
He likes alternative music.
この問題にはオルタナティブが必要だ。
We need an alternative for this problem.