The four-letter word you’re looking for is "tent." A tipi is a type of tent traditionally used by some Indigenous peoples of North America. Tents provide shelter and can vary in style, with tipis being one of the many designs used for camping or living.
Fifi Fiji Kiwi Midi Mimi Mini Tipi
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
step
asea
Talk.