It throws its unobtrusive tinge throughout the room, with a faint ruddiness upon the walls and ceiling, and a reflected gleam upon the polish of the furniture.
Not the less, however, came this importunately obtrusive sense of change.
Pearl, that wild and flighty little elf stole softly towards him, and taking his hand in the grasp of both her own, laid her cheek against it; a caress so tender, and withal so unobtrusive, that her mother, who was looking on, asked herself—"Is that my Pearl?"
There are no more uses of "unobtrusive" in the book.
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The web site has a lot of ads, but they are unobtrusively placed on the far right of the screen.