dimmer
名词 dimmer:
a rheostat that varies the current through an electric light in order to control the level of illumination
形容词 dim:
lacking in light; not bright or harsh
lacking clarity or distinctness
同义词:dim, faint, shadowy, vague, wispy
made dim or less bright
offering little or no hope
slow to learn or understand; lacking intellectual acuity
同义词:dense, dim, dull, dumb, obtuse, slow