Synonyms for under

Referring to physical position

on the bottom of, below, on the nether side of, covered by, beneath, concealed by, held down by, supporting, pinned beneath, on the underside of, pressed down by.

Antonyms above*, over, on top of.

Subject to authority

subordinate to, reporting to, amenable to, subjugated to, under the sway of, governed by, in the power of, obeying the dictates of, obedient to, directed by.

Included within

subsumed under, belonging to, corollary to, inferred from, consequent to, subsidiary to, comprised in, subsequent to, following; see also below 3.

Antonyms different*, distinct from, apart.