something that is performed, made, or done without preparationthat comedy skit was a totally unrehearsed improvisation
that comedy skit was a totally unrehearsed improvisation
ad-lib, extemporization, impromptu, improv
concoction, contrivance, creation, innovation, invention, wrinkle
bit, drill, routine
in 1777
英语同义词词典收录了63618条英语词条，基本涵盖了全部常用同义词或反义词的辨析及翻译，是英语学习的有利工具。