Where does “exercitandus” come from?

exercitandus (Latin) comes from Latin exercitō, from Latin exerceo, from Latin arceo, from Proto-Italic arkeō, from Proto-Indo-European h₂erk- — to protect, guard, hold, lock.

exercitandus (Latin): which is to be exercised

Definitions

which is to be exercised

Ancestry of “exercitandus”, step by step

Step	Language	Word	Meaning
1	Latin	exercitō	to exercise, practice or train
2	Latin	exerceo	I keep busy, keep at work, drive on; occupy,...
3	Latin	arceo	I shut up, enclose; box in; I keep off, ward off;...
4	Proto-Italic	arkeō	to contain
5	Proto-Indo-European	h₂erk-	to protect, guard, hold, lock

Every word from Proto-Indo-European h₂erk- →