spokenespecially British Englishused to say that something is good enough to be accepted or considered seriously:
An 8% salary increase is not to be sniffed at.
2to refuse something in a proud way, or behave as if something is not good enough for you:
He sniffed at my choice of restaurants and suggested his own favorite.
sniff something ↔ out
1to discover or find something by its smell:
A customs officer came round with a dog to sniff out drugs.
2informalto find out or discover something:
Vic's been trying to sniff out where you went last night.
WORD FOCUS: breathe WORD FOCUS: breathe to breathe in:inhaleformal to breathe out:exhaleformal to breathe noisily:sniff, snore (when sleeping) snort, sigh to breathe with difficulty:gasp, pant, wheeze, be short of breath, be out of breath to be unable to breathe:choke, suffocatebreathe ➔ See alsobreathe
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.