adverb

towards or in a lower place or position, especially to or on the ground or another surface.

she looked down

towards a lower position,downwards,downstairs,towards the bottom,from top to bottom,to the ground,to the floor,over

preposition

from a higher to a lower point of (something).

up and down the stairs

lower in/on,to the bottom of

adjective

directed or moving towards a lower place or position.

the down escalator

verb

knock or bring to the ground.

175 enemy aircraft had been downed

knock down,knock over,knock to the ground,throw to the ground,bring down,bring to the ground,fell,topple,prostrate,tackle,rugby-tackle,trip up,deck,floor,flatten

noun

a period of unwelcome experiences or negative mood.

there had been more downs than ups during his years at the company

setbacks,upsets,reverses,reversals,reversals of fortune,downturns,mishaps,strokes of ill luck,strokes of bad luck,accidents,shocks,vicissitudes,crises,catastrophes,tragedies,calamities,trials,crosses,knocks,burdens,blows,buffets,glitches,(double) whammies,knock-backs,foils,fit of depression,period of despondency,the blues,the dumps,one’s black dog,a low,the blahs,a funk,a blue funk,the mopes,dolour,the megrims