unsuspected

“Maria, the unsuspected messenger became a joke between us,” he says.

With a gasp of dismay young Richard twisted in his chair to confront this fresh and unsuspected antagonist.

He has a sitter at three—a lady of the highest society, who wishes her visits to remain unsuspected.

I should not have minded being thought a Russian if they had not looked upon the most unsuspected people of Russia as spies.

There was no need for this precaution; their door remained unsuspected, and in five minutes the coast was clear.

She glided like a smooth serpent, or an invisible spirit; her presence was unseen, unfelt, unsuspected.