The great mast shifted imperceptibly with gusts of wind.

We wove our way steadily downward, shifting slowly and imperceptibly.

Slitted eyes shifted almost imperceptibly within an almost featureless skull; one long, taloned finger dipped into a fluted glass half-full of viscous red liquid.

Spock shifted almost imperceptibly in his chair.

The five-speed automatic transmission, which adapts to one's driving style, shifts imperceptibly.

One of the statue-like workers bent over her tray of Praline Dreams was shifting almost imperceptibly.

Vamps stretch out but don't turn repetitious: They mutate, shifting suddenly or imperceptibly from angular funk to swing to rock, as a new guitar lick or a horn-section riff nudges the jam in a different direction.

Nyueng Bao fencing technique consists of brief but intense flurries of attack and defense separated by inactive periods during which the fighters freeze in odd stances, shifting almost imperceptibly as they try to anticipate one another.

The mood in the army shifted imperceptibly and took on a focus.

The trees were motionless as a painting of themselves, but were their shadows on the common almost imperceptibly shifting?