adjective / verb
dim
DIM/dɪm/
Giving little light or brightness.
The bedside lamp casts dim light over the closed book.

Etymology
Old English dimm already described things that were dark or indistinct. The modern meaning preserves that connection between weak light and difficulty seeing something clearly.
In context
I owe you an apology for not recognizing you but it was rather dim in here
More examples
- I dim the lights before starting the movie.
- The flashlight dims as its batteries run low.
- The hallway is dimmer than the kitchen.
Forms
dim · dimmer · dimmest · dims · dimmed · dimming
dimly adverb — With little light or brightness.
dimness noun — The state of having little brightness.