port
A four letter word meaning not kosher is: tref
The word pine can have that meaning.
left is a four-letter word
A four-letter word for cooking fat is "lard".
into
left
left
stop or halt is a four letter word meaning the opposite of go.
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.
A four letter word meaning to grow light as the sun rises is dawn.
Wash is a four letter word meaning "to clean with water".