Undim

adjective, dimmer, dimmest.
1.
not bright; obscure from lack of light or emitted light:
a dim room; a dim flashlight.
2.
not seen clearly or in detail; indistinct:
a dim object in the distance.
3.
not clear to the mind; vague:
a dim idea.
4.
not brilliant; dull in luster:
a dim color.
5.
not clear or distinct to the senses; faint:
a dim sound.
6.
not seeing clearly:
eyes dim with tears.
7.
tending to be unfavorable; not likely to happen, succeed, be favorable, etc.:
a dim chance of winning.
8.
not understanding clearly.
9.
rather stupid; dim-witted.
verb (used with object), dimmed, dimming.
10.
to make dim or dimmer.
11.
to switch (the headlights of a vehicle) from the high to the low beam.
verb (used without object), dimmed, dimming.
12.
to become or grow dim or dimmer.
Verb phrases
13.
dim out, (in wartime) to reduce the night illumination of (a city, ship, etc.) to make it less visible from the air or sea, as a protection from enemy aircraft or ships.
Idioms
14.
take a dim view of, to regard with disapproval, skepticism, or dismay:
Her mother takes a dim view of her choice of friends.
adjective dimmer, dimmest
1.
badly illuminated: a dim room
2.
not clearly seen; indistinct; faint: a dim shape
3.
having weak or indistinct vision: eyes dim with tears
4.
lacking in understanding; mentally dull
5.
not clear in the mind; obscure: a dim memory
6.
lacking in brilliance, brightness, or lustre: a dim colour
7.
tending to be unfavourable; gloomy or disapproving (esp in the phrase take a dim view)
verb dims, dimming, dimmed
8.
to become or cause to become dim
9.
(transitive) to cause to seem less bright, as by comparison
10.
(US & Canadian) (transitive) to switch (car headlights) from the main to the lower beam Also called (in Britain and certain other countries) dip
dim
see: take a dim view