Then I heard his whistle, and back I ran recklessly through the thickening darkness to the school-house.
It was then, with that thickening peril, Washington rose to his highest stature.
The day was thickening into dusk then; it is ripening into sunset glory to-day.
The plot was thickening; the fatal net was drawing closer and closer.
Grahame, driving slowly, began to nod in the thickening fog.
To make the gravy, pour in the liquor and a little water and thickening.
It gets its name from the fact that corn starch is used for a part of the thickening.
Father told me it was a thickening of the lungs, or something of the sort.
We could see the brig, through the thickening gloom, at her anchors.
Pearl barley is invaluable for thickening soups, sauces, etc.