under-

From Middle English under-, from Old English under-, from Proto-Germanic *under, from Proto-Indo-European *n̥dʰér (“lower”) and *n̥tér (“inside”). For more, see under.

under-

1. Beneath, under

   e.g. underground, underneath, underpass

2. (metaphor) To go from one side to the other; to progress along a path

   e.g. understand, undergo, underbear, undertake

3. Less than, beneath in quantity

   e.g. underadditive, underage, underbound

4. Deficient, below what is correct, insufficient

   e.g. underapply, underbill, underawe

5. Subordinate to

   e.g. undersecretary, underling, underclass

• In many common cases, this prefix is attached directly to a word. When forming new words, however, it is typically hyphenated until the word becomes common.

• (under): hypo-, sub-, infra-
• (forming a transitive verb): en-
• (less than): hypo-, olig-, meio-
• (deficient): hypo-, dys-, mal-
• (subordinate): vice-, sub-

• (antonym(s) of “under”): over-, epi-, sur-
• (antonym(s) of “less than”): hyper-, supra-, pleo-
• (antonym(s) of “deficient”): telo-, per-, pur-
• (antonym(s) of “subordinate”): arch-

• Duren, nuder, ruden, runed, unred, urned

under-

1. under-
2. sub-

• under

• “under-” in The Bokmål Dictionary.

• poinn- (dialectal)

under-

1. under-
2. sub-

• under
• undervass-

From Proto-Germanic *under, from Proto-Indo-European *nter- (“between, among”), akin to Old English under (“under, beneath”), Old High German untar (“between, among”), Latin inter (“between, among”). More at inter-.

• IPA^(key): /ˈun.der/ (as a nominal prefix)
• IPA^(key): /ˌun.der/ (as a verbal prefix)

under-

1. between, among

   understandan ― to understand (originally 'to stand between', 'be near to both sides')

   underscēotan ― to intercept

From Proto-Germanic *under, from Proto-Indo-European *ndhero- (“lower”), akin to Old English under (“between, among, in the presence of”), Old High German untar (“under”), Latin infra (“below, beneath”).

under-

1. beneath
2. subordinate to

   underling ― underling, subordinate

under-

1. under-
2. sub-

• under
• undervattens-

• runde, undre