Wiktionary
a. Not littered.
WordNet
adj. having nothing extraneous; "an uncluttered room"; "the unlittered shoulders of the road" [syn: uncluttered]
Usage examples of "unlittered".
They walked up the steep incline, the stone smooth and unlittered with even the smallest pebble, the slightest crack.
It was particularly comforting on a long voyage for an unlittered female to have the companionship of an elder who had given birth.
Electrically controlled gates open soundlessly and long cars with dark tinted glass glide out onto unlittered streets where there is no one in sight except the gardeners moving quietly across unnaturally green grass.
He would like to do this painting himself, and perhaps he could, but he would need some rest and unlittered space.
If you had been going by in a boat you would have never known about that neat little clean patch with its edged flower beds and its unlittered streets.
A good idea, he had to admit to himself, for if the plaid had been well set and unlittered by rushes, he should not have known it was her and most likely would have paid her little heed.
The stone of the floor was unlittered with the stiff, yellow stall bedding, as though one had already been there to clear away the trailings of the fey previous, leaving my feet an easier path through the dwelling.