The phrase "adequately illuminated" is correct and usable in written English.
It can be used to describe a space or object that has sufficient lighting for visibility or clarity.
Example: "The gallery was adequately illuminated, allowing the artwork to be appreciated in its full detail."
Alternatives: "sufficiently lit" or "properly lit".
Never leave windows open when the family is away from the house, and ensure the exterior space around them is adequately illuminated.
Federal investigators are examining whether the intersection near Tuesday's Metrolink crash in Oxnard was "adequately illuminated" in the early-morning darkness, officials said Wednesday. .
The flag is flown from sunrise to sunset, except in case of bad weather; exhibition at night is permitted provided it is adequately illuminated.
Are all escape routes easily identifiable, accessible and adequately illuminated.
As Susan Bordo points out, this model of self-surveillance does not adequately illuminate all forms of female subordination — all too often women are actually compelled into submission by means of physical force, economic coercion, or emotional manipulation.
Most offices are outfitted with overhead lighting that doesn't adequately illuminate the work at hand.
The limited length of this essay, unfortunately, does not permit us to adequately illuminate all relevant details, so as an eye witness I will concentrate more on my personal relationships with the company.
It is also an entirely empirical question whether the perspective best fitted to gaining insight into one class of objects or processes (e.g. the eukaryotes) will be the same as that most appropriate to another (e.g. the prokaryotes) and, indeed, whether any single perspective will adequately illuminate a particular class of objects or processes.
The problem with any night sights used in nearing dusk, or early morning, when there is not enough light to adequately illuminate the white rings, and it is too bright to see the tritium, at this point the sights are very difficult to accurately line up.
Baudrillard (1975) argues that Marxism, first, does not adequately illuminate premodern societies that were organized around religion, mythology, and tribal organization and not production.
My fire-bestowed, genteel homelessness has brilliantly illuminated a reality I'd never adequately imagined.
