sniff

Verb

sniff (third-person singular simple present sniffs, present participle sniffing, simple past and past participle sniffed)

1. (ambitransitive) To make a short, audible inhalation, through the nose, as when smelling something; to smell (something).
   • The dog sniffed around the park, searching for a nice scent.
   • I sniffed the meat to see whether it had gone off.
   1. (ambitransitive, transitive) To say (something) while sniffing, such as in case of illness or unhappiness, or in contempt.
      • "He's never coming back, is he?" she sniffed while looking at a picture of him.
   2. (UK, ambitransitive, slang) To inhale drugs (usually cocaine) through the nose, usually in powder form.
      • Looks like I picked the wrong week to quit sniffing glue.1980, Jim Abrahams, David Zucker, Jerry Zucker, directors, Airplane!, spoken by Steve McCroskey (Lloyd Bridges)
   3. (ambitransitive, figuratively) To be dismissive or contemptuous of something; used with at.
      • This opportunity is not to be sniffed at.
   4. (ambitransitive, broadly, transitive) To perceive vaguely.
      • I don't know, of course, what your precious Radicals are planning to do, and I don't want to know; but I can sniff trouble in the air, nevertheless.1952, Isabelle Hughes, Lorena Telforth, page 223
2. (intransitive) To pry; to investigate in an interfering manner.
   • COOMBE: He got the clinch only last week — eighteen months. You see it's no good having anybody here as ain't got a^([sic]) unblemished character. We don't want to have the bluebottles come sniffing round here, do we?1882, Henry Herman, Henry Arthur Jones, The Silver King
   1. (intransitive) To intercept and analyse packets of data being transmitted over a network.
      • packet sniffer

Noun

sniff (countable and uncountable, plural sniffs)

1. (countable) An instance of sniffing.
   • She gave the flowers a quick sniff to check they were real.
2. (countable) A quantity of something that is inhaled through the nose.
3. (colloquial, countable) A brief perception, or tiny amount.
   • Tottenham did have a sniff of goal when Defoe's drilled cross just eluded his strike partner at the far post but their best effort came early in the second half when Ryan Fredericks cut in from the right before firing into the side netting.2011 November 3, Chris Bevan, “Rubin Kazan 1 - 0 Tottenham”, in BBC Sport
   • Telecoms firms want a sniff, having invested heavily in ultra-fast, low-latency 5G spectrum.2021 December 18, “The billionaire battle for the metaverse”, in The Economist, →ISSN
4. (slang, uncountable) Cocaine.
   • He sold us some sniff and blow.2008, Tammy Anderson, Neither Villain nor Victim
5. (countable, slang) A toddler or young child.

Interjection

1. A short inhalation sound, sometimes associated with crying.
   • a wild boar is laughing and Obelix is crying
     Wild boar classified a protected species
     First reaction from dismayed costumers:
     “Boohoohoo! Sniff!”2009, Asterix and Obelix's Birthday: The Golden Book, page 28