Past the door, so flimsy it was virtually unnoticeable.

To drive, the system is very good and virtually unnoticeable.

The range extends from virtually unnoticeable gaps to the near-complete inability to comprehend language, or even the loss of the entire "self."

Even the normal sting of ash in the air was virtually unnoticeable tonight; three days had allowed a great deal of ash to dissipate.

The little black box was virtually unnoticeable in the night.

Though virtually unnoticeable, Trent couldn't risk the blemish.

If done properly, a changeover should be virtually unnoticeable to an audience.

She flinched a little, virtually unnoticeable to anyone who didn't know her as well as Jack did.

It would hamper drug trade in the south of Florida, but only briefly, virtually unnoticeable at street level, where the pushers and consumers made their deals.

The three actresses blend so well into one another that the transitions are virtually unnoticeable.