Unobserving [adjective]

However this might have been, for the second time on that day of direst exigency, a ship went by, observed yet unobserving.

Filled with dreary imaginations, I passed through many beautiful and majestic scenes; but my eyes were fixed and unobserving.

Marcella sighed as she contemplated that radiant, unobserving countenance; she saw it was happiness that shone there.

They were so very bright and gay and varied, that even the most unobserving could not but notice them.

Mary Johnson must be unobserving in the extreme if she failed to know him, once she glimpsed him in the crowd.

This conduct, which seems odd to unobserving persons, is really very natural.

Once Harvey nearly sat down when an unobserving hand jerked a strip of carpet from under his feet.

The unobserving Germans were all round her, the English girls tailed away invisibly into the distant obscurity.

In the old days, to my commonplace and unobserving mind, he gave no evidences of genius whatsoever.

Even among the most crude and unobserving, traditions and incidents have given witness to this knowledge.