A four letter word meaning the foundation of something is base.
have
to miss or be deficient = lack
The four letter word for repairing something is mend.
a Seat
Jackass
base
hill
have
Perhaps 'gist'? As in, "to get the gist of something"?
Plant
Base.
dash
The four letter word that means, "I forbid," is veto.veto
to miss or be deficient = lack
The word you are looking for is "mass."
The four letter word is dawn.
"Else," is in, "If we can't get tickest to the play, we'll do something else."