Nouns

(n)snuffle, sniffle, snivelthe act of breathing heavily through the nose (as when the nose is congested)

Verbs

(v)snivel, sniffle, blubber, blub, snufflecry or whine with snuffling“Stop snivelling — you got yourself into this mess!”
(v)sniff, sniffleinhale audibly through the nose“the sick student was sniffling in the back row”