im·promp·tu 
/ɪmˈprɑ:mptu, Brit ɪmˈprɒmptju/ adjective
/ɪmˈprɑ:mptu, Brit ɪmˈprɒmptju/ adjective : not prepared ahead of time : made or done without preparation
▪ Two of my friends came by unexpectedly, and we had an impromptu little party in my kitchen. ▪ He made an impromptu speech about honor and responsibility.
▪ Two of my friends came by unexpectedly, and we had an impromptu little party in my kitchen. ▪ He made an impromptu speech about honor and responsibility.
— impromptu adverb
▪ speaking impromptu
▪ speaking impromptu
