Examples from the Web for hoarfrost
It was a perfect autumn day, hoarfrost in the morning and midsummer heat at noon.
To-day, however, they all lent their stalks to support the hoarfrost, to double and quadruple its total mass.Over Prairie Trails|Frederick Philip Grove
He fancied there would be hoarfrost on the trees in the morning.A Michigan Man|Elia W. Peattie
Yesterday morning the air became milder, the hoarfrost began to disappear, and presently the snow became "grippy" underfoot.
Not till I saw what looked like hoarfrost dropping from the side of the Fall was the problem explained.The Yosemite|John Muir