LATIN DICTIONARYLexicon Latīnum
suffix

-istis

-istis

Meaning

  1. morphemeUsed for the second person present perfect plural form of any regular verb.

Origins

From a probable Proto-Italic -istes, if not formed by analogy to the other second person plural active endings.

Quick answers

What does -istis mean in Latin?
-istis, a suffix, means “Used for the second person present perfect plural form of any regular verb.”.