Dawn
The four letter word is dawn.
"Daybreak" is a compound word that means when the sun comes up.
The four letter word that means, "I forbid," is veto.veto
break, dumbhead
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
step
asea