Dim Very Common

Dimness.

"The dimness of the hallway made it hard to see where I was going."

switch (a car's headlights) from a higher to a lower beam

"The driver dimmed her lights to avoid blinding the oncoming truck."

become dim or lusterless

"the lights dimmed and the curtain rose"

make dim or lusterless

"Time had dimmed the silver"

make dim by comparison or conceal

"The bright headlights made his own eyes seem dim, while the heavy fog concealed everything beyond the road."

become vague or indistinct

"The distinction between the two theories blurred"

To make something less bright.

"The clouds dimmed the sunlight as they rolled in to cover the sky."

lacking in light; not bright or harsh

"a dim light beside the bed"

"subdued lights and soft music"

lacking clarity or distinctness

"a dim figure in the distance"

"only a faint recollection"

"shadowy figures in the gloom"

"saw a vague outline of a building through the fog"

"a few wispy memories of childhood"

made dim or less bright

"the dimmed houselights brought a hush of anticipation"

"dimmed headlights"

"we like dimmed lights when we have dinner"

offering little or no hope

"the future looked black"

"prospects were bleak"

"Life in the Aran Islands has always been bleak and difficult"

"took a dim view of things"

slow to learn or understand; lacking intellectual acuity

"so dense he never understands anything I say to him"

"never met anyone quite so dim"

"although dull at classical learning, at mathematics he was uncommonly quick"

"dumb officials make some really dumb decisions"

"he was either normally stupid or being deliberately obtuse"

"worked with the slow students"

Not bright or colorful.

"The old room felt dim because there were no windows to let in any sunlight."

A male given name.

"Dim is my brother's middle name, which his parents chose because they loved the lightness it suggested."