【副詞】
準備なしに 即座に 即興的に
【形容詞】
準備なしの 即座の 即興的な 間に合わせの
【可算名詞】
即席演説 即興詩 即興曲
(用例)The coworkers held an impromptu meeting to discuss their situation right after their boss announced that she would quit her job.
出典 pixabay
