A four letter word meaning the foundation of something is base.
Rend is a four letter word that means to tear into pieces. Tear is also a four letter word meaning to pull apart.
temp
taxi
dumb
Crow.
Bean Crab Drag Flag Snag Grab Brag
It could be brio, bred, brag, brew, brie...
The four letter word that means, "I forbid," is veto.veto
Brag
The four letter word is dawn.
Scam or Brag
A four letter word meaning the foundation of something is base.
Exit
Rend is a four letter word that means to tear into pieces. Tear is also a four letter word meaning to pull apart.
The word is scam.
Brag, boast