Synonyms for Under (same or very similar meaning)
WordNet sense 1 (located below or beneath something else):
nether
WordNet sense 2 (literal meanings; being at or having a relatively small elevation or upward extension):
low
WordNet sense 3 (lower in rank or importance):
low-level, subordinate
WordNet sense 4 (further down):
below
From the ODE community, based on WordNet
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