The opposite of unusual is common.
into
stop or halt is a four letter word meaning the opposite of go.
Shutting
approach, increase
general, generic
Perhaps the word you are looking for is "normal".
The 4-letter root word meaning against or opposite is "anti."
into
A five letter word meaning the opposite of hurry would be dally. There may well be others
stop or halt is a four letter word meaning the opposite of go.
Unusual
The word is empty.
The word is likely "modern."
frontal? Forward?
The typical word is "little."
Western
running