If you draw something, it's automatically protected by copyright. Otherwise... "register" is way too long.
The four letter word that means, "I forbid," is veto.veto
The four letter word is dawn.
Exit
A four letter word meaning the foundation of something is base.
The word is scam.
Rend is a four letter word that means to tear into pieces. Tear is also a four letter word meaning to pull apart.
aide
Fast
asea
step
Talk.
papa