The movement is barely perceptible; the intervals of rest long and frequent.

The other made a barely perceptible inclination of the head and departed.

Detecting such barely perceptible phenomena requires sensitive instruments, usually buried deep underground.

But by night, even in that brilliant moonlight, it was barely perceptible.

His nod was barely perceptible... and it made her shiver with fear.

He took a slight, barely perceptible bow when I approached his desk.

A gentle, barely perceptible wind sighed among the leaves, like rustling silk.

Most of these, however, were very slight, some of them barely perceptible.

Marion seemed to be sleeping, with eyes closed and breathing barely perceptible.

I tell Augustus this with a barely perceptible shake of my head.

Only then did Allday give a barely perceptible shake of the head.

A barely perceptible shake of the head, though Jesse's lips were dry.

The River Master responded with a barely perceptible nod, but still said nothing.

Both customs officers stiffened, their change in attitude barely perceptible, but there nonetheless.

A distant, barely perceptible rumble seemed to come from behind us.

At first it's simply liquid plunging into liquid, a tiny puncture barely perceptible.