inexpressive

The dawn of the March morning is singularly inexpressive, and there is nothing to show where the eastern horizon lies.

Almost—not quite; in spite of its inexpressive speech, the narrow house is aware and sensitive beyond, as it were, its poor power.

Simplicity, healthy goodness, the radiance of unsmirched youth seemed to his eyes wholly inexpressive.

"I wonder what made you feel you could," he said, still in the same curiously inexpressive way.

It was plain she was a little puzzled, and took refuge in the conveniently inexpressive "really."