Synonyms for Spur of the moment

Synonyms starting with letter I

• impromptu

  spontaneous, made-up, ad-lib
• improvised

  spontaneous, extemporaneous, impromptu
• impulsive

  spontaneous, acting without thinking
• improv

  without preparation, improvised, unrehearsed
• immediate

  extemporaneous, unrehearsed, improvised
• informal

  improvised, ad-lib, unrehearsed
• improvisatory

  extemporaneous, unrehearsed, improvised
• improviso

  impromptu, extemporaneous, unrehearsed
• impassioned

  acting without thinking
• invented
• incidental
• inessential
• ill-judged