practise

The story

1. Proto-Indo-European · derived from*per(h₂)-“to go over, cross”
2. Ancient Greek · derived fromπρᾱκτική
3. Middle French · derived frompratiser
4. Middle English · inherited frompractizen
5. English todaypractise

From Middle English practizen, a variant of practisen, from Middle French pratiser, practiser, from Medieval Latin practizo, from Late Latin practico (“to do, perform, execute, propose, practise, exercise, be conversant with, contrive, conspire, etc.”), from prāctica (“practical affairs", "business”), from Ancient Greek πρᾱκτική (prāktikḗ), from πρᾱκτικός (prāktikós, “practical”), from πρᾱ́σσειν (prā́ssein, “to do”), ultimately from Proto-Indo-European *per(h₂)- (“to go over, cross”).