improvisation

即興、即興演技

台本の準備や稽古なしに、その場で作りながら行う演技や演奏。

やさしい英語で： A performance created as it happens, without a prepared script or rehearsal.

• The actors tried some improvisation.
• Her improvisation made the audience laugh.
• We watched three short improvisations based on suggestions from the crowd.

類義語： improv, ad-libbing

よく使う表現： stage improvisation, comic improvisation, improvisation exercise

即興演奏、即興創作

準備せず、演奏や朗読をしながら音楽や詩などを作ること。

やさしい英語で： Creating music, poetry, or similar work as you perform, without preparing it beforehand.

• Jazz often involves improvisation.
• He studied musical improvisation at college.
• Their improvisations turned a simple tune into something unexpected.

使い方： improvisation on something (Her improvisation on the piano lasted five minutes.)

類義語： spontaneous composition

よく使う表現： jazz improvisation, musical improvisation, improvisation on something

改善

何かをよりよくするために変えること。

やさしい英語で： The act of changing something to make it better.

• The writer uses improvisation to mean improvement.
• Here, improvisation refers to making a process better.
• In this account, improvisation means improving an existing design.

使い方： improvisation of something (The report uses improvisation of the design to mean making it better.)

類義語： improvement, enhancement

反対語： deterioration

よく使う表現： improvisation of something, gradual improvisation, further improvisation