instrument + -al

source: Your favorite instrumental music from an anime · Anime For The People · Disqus

1. serving as an instrument or means in pursuing an aim or policy:

more ～; most ～ ｟かたく｠ ; 〖通例be ～〗 «…(する)にあたって/…にとって» 役立つ, 助けになる «in (doing)/to»

e.g. the Society was instrumental in bringing about legislation.

relating to something's function as an instrument or means to an end:

e.g. a very instrumental view of education and how it relates to their needs.

2. (of music) performed on instruments, not sung:

比較なし 〖名詞の前で〗(歌のない)楽器だけの, 器楽の〈音楽など〉(↔ vocal)

e.g. a largely instrumental piece.

relating to musical instruments:

e.g. brilliance of instrumental color.

3. relating to an implement or measuring device:

e.g. instrumental error

e.g. instrumental delivery of a baby.

4. Grammar denoting or relating to a case of nouns and pronouns (and words in grammatical agreement with them) indicating a means or instrument.

比較なし 〘文法〙 具格［助格］の

1. a piece of (usually nonclassical) music performed solely by instruments, with [no vocals.

〖通例～s〗 (歌のない)器楽曲, インストルメンタル

2. (the instrumental) Grammar the instrumental case.

〘文法〙 具［助］格(instrumental case)

a noun in the instrumental case.

instrumentally adverb