Vocabulary What does とっさに (tossani) mean? とっさに means instantly, in a split second. Quick factsReadingとっさにRomajitossaniLevel (estimated, JLPT framework)N1 とっさにとっさにN1 · estimated, JLPT frameworktossaniinstantly, in a split secondExample sentencesとっさに身(み)を避(さ)けた。I dodged out of the way instinctively.とっさに嘘(うそ)をついてしまった。I ended up telling a lie on the spur of the moment.