Beneath.
under
under the sea
Under.
disreputable. If you need more, there are tons more on dictionary.com under synonym.
Below, under.
under process processing
malnourished and severely under weight
to keep under control and a synonym is to 'stabilize'
immature, defenseless, subordinate, under
The antonym for overhead is under
below has synonyms like under beneath down
Inferior, below, minor, little, shallow, sunken, or under.