Boris smiled almost imperceptibly while listening to his mother.
The universal experience of ages, showing that children do grow imperceptibly from the cradle to manhood, did not exist for the countess.
It passes westwards imperceptibly into the Ardennes.
These pass imperceptibly into - (5) the arid desert, where rainfall is at a minimum, and the only plants are those modified to subsist with the smallest supply of water.
It may be regarded as certain that among Jewish Christians it almost imperceptibly grew out of the old habit of annually celebrating the Passover on the 14th of Nisan, and of observing the "days of unleavened bread" from the 15th to the 21st of that month.