WordReference Random House Learner's Dictionary of American English © 2014
un•der /ˈʌndɚ/USA pronunciation
beneath and covered by:She stood under a tree.
below the surface of:They swam under water.
at a point lower than:He got a bump just under his eye.
in the position of trying to carry, support, endure, sustain, etc.:to sink under a heavy load.
beneath the cover or disguise of:registered under a false name.
beneath the heading of:Classify the books under "Fiction.''
below in degree, amount, etc.; less than:These books were purchased under cost.
below in rank:A corporal is under a lieutenant.
working for; controlled by the authority, influence, or guidance of:studied violin under a great master.
in accordance with;
following:under the provisions of the law.
during the administration or reign of:Those laws were passed under President Lincoln.
in the state or process of:under construction; a bridge under repair.
below or beneath something:Go over the fence, not under.
beneath the surface of water:was held under by the seaweed.
in a lower degree, amount, etc.:selling shirts for $25 and under.
in a lower position or condition.
go under, [no object]
- to give in; succumb;
located beneath or on the underside:the under threads of embroidery.
lower in position.
lower in degree, amount, rank, etc.:Children seven or under get in free.
being in a state of unconsciousness:The patient was under during the surgery (= The patient was unconscious because of the effect of the anesthetic).
- to fail in business:His dry cleaning business went under.
- under- is attached to nouns and means: "a place or situation below or beneath:''underbrush; undertow.
- under- is also used to mean "lower in grade, rank, or dignity:''undersheriff; understudy.
- under- is also attached to adjectives to mean "of lesser degree, extent, or amount:''undersized.
- under- is also used to mean "not showing enough; too little:''underfed.
Collins Concise English Dictionary © HarperCollins Publishers::
under /ˈʌndə/ prep
- directly below; on, to, or beneath the underside or base of: under one's feet
- less than: under forty years
- lower in rank than: under a corporal
- subject to the supervision, jurisdiction, control, or influence of
- subject to (conditions); in (certain circumstances)
- within a classification of: a book under theology
- known by: under an assumed name
- planted with: a field under corn
- powered by: under sail
- during the period that the sun is in (a sign of the zodiac): born under Aries
Etymology: Old English; related to Old Saxon, Gothic undar, Old High German untar, Old Norse undir, Latin infra
- below; to a position underneath something
'under' also found in these entries: