“Hydrogen rises in the air on account of its levity.”

“Despite the undercurrent of levity, the activists were quite serious in their intent.”

“To heighten her misfortune, the late levity of her temper had hindered her from cultivating an acquaintance with any one person.”

“At best, these were doubtful levities, rather too thievish for a schoolboy, rather too gamesome for a thief.”

“But all these levities are scattered by what may well be called the note of a bugle.”