下

to hang down; to dangle

to blow down upon

upward compatible; forward compatible; compatible with input or components intended for higher tier or later systems, versions, etc.

Incorrect usage

downward compatible; backward compatible; compatible with input or components intended for lower tier or older systems, versions, etc.

Slang

providing the same function while being less effective (esp. in games)

confused; chaotic; jumbled; upside-down

Idiomatic expression

unsung hero; person who does a thankless task

downstairs room

Colloquial; Abbreviation

basement of a department store (where foodstuffs are usually sold)

water and sewer services

under a railway (oft. of shops, bars, etc.); under the tracks; under a railroad overpass

Colloquial

unskilled; awkward; bad; clumsy; poor

proletariat; lower classes

peerless; unequalled; unequaled

to slide down; to slip down

with a single blow; with one stroke

to have diarrhea

reduction; cut

to stroke down; to smooth down

pigtails; two plaits (braids) hanging about one's shoulders; two plaits (braids) hanging down one's back

no good at cooking

unloading (of cargo); discharge

to make a sale of government property

underground organization; underground organisation

subcutaneous fat

the world and the nation; the state of the world; high affairs of state