“The impact would be nearly imperceptible at first, but it'd be there, and significant enough to gum things up.”

“In addition, fluid flows, airflows, strain forces, and acoustical waves that were previously imperceptible might now be detected.”

“Two were eating out of the bowls that refilled so slowly that it was imperceptible, and two were eating out of regular bowls.”

“The reasons for T's actions are explained later, but as they play out onscreen, they seem mannered and imperceptive.”

“Nevertheless, it was strange that he should be so imperceptive of her charms.”

“Nor was he imperceptive about himself, or shameless.”