The act, or the sound of sniffling; the condition of having a runny or wet nose, as from a cold or allergies.

“I sometimes have a sniffle during allergy season.”

To make a whimpering or sniffing sound when breathing, because of a runny nose.

“Sonia sniffled a little, and her eyes were puffy and wet.”

To utter with a whimpering or sniffing sound.

“He sniffled a pathetic apology.”