unobtrusively

adv

Etymology: From unobtrusive + -ly or un- + obtrusively.

1. In an unobtrusive manner; in a manner that is not noticeable or blatant.

   “He felt not the slightest doubt in his mind that this was the girl who had written him, and, having given an order to the waiter, he started to study her face as unobtrusively as possible.”

   “Sometimes she and Miss Baker talked at once, unobtrusively and with a bantering inconsequence that was never quite chatter, that was as cool as their white dresses and their impersonal eyes in the absence of all desire.”