English Reference
verb · noun · interjection

sniff

v. · n. · interj.
US /ˈsnɪf/ UK /snˈɪf/ sniff UK spelling sniffed, sniffs

  1. 01 B1 Intermediate

    v.to breathe in air through your nose in a way that makes a sound, often to smell something.

    v.to inhale audibly through the nose, typically to perceive an odour or to clear the nasal passages.

    Simple

    The dog started to sniff the grass as soon as we got to the park.

    In context

    The sommelier leaned over the glass to sniff the wine, searching for the subtle notes of oak and berry mentioned in the tasting guide.

    smellinhalesnuffle
  2. 02 B2 Upper Intermediate

    v.to show that you do not respect something or think it is not good enough.

    v.to express contempt, disdain, or dismissal, often accompanied by an audible nasal inhalation.

    Simple

    Critics might sniff at the new movie, but the public seems to love it.

    In context

    Traditionalists tend to sniff at modern architectural interventions in the historic district, viewing them as aesthetic disruptions rather than progress.

    Usage

    often used with the preposition 'at'

  3. 03 C1 Advanced Technical Computing

    v.to use a computer to look at information moving across a network.

    v.to intercept and analyse packets of data as they are transmitted over a digital network.

    Simple

    Hackers can try to sniff your password if you use public Wi-Fi without a VPN.

    In context

    Network administrators use specialised tools to sniff traffic for signs of malicious activity or configuration errors that might cause latency.

  4. 04 C1 Advanced SlangBritish English

    v.to breathe a drug in powder form up into your nose.

    v.to insufflate a powdered illicit substance, most commonly cocaine, through the nostrils.

    Simple

    The documentary showed the dark side of people who sniff cocaine at parties.

    In context

    The undercover investigation revealed a network of individuals who would regularly sniff illegal substances in the club's private lounges.

  5. 05 B1 Intermediate

    n.the sound or action of breathing in through your nose.

    n.a single act of audible nasal inhalation.

    Simple

    With a loud sniff, she wiped her eyes and tried to stop crying.

    In context

    The detective gave a suspicious sniff as he entered the room, immediately noticing the faint scent of gunpowder hanging in the air.

    snuffleinhalation
  6. 06 B2 Upper Intermediate Informal

    n.a very small amount of something, or a quick chance to see or smell it.

    n.a brief perception or a negligible quantity of something.

    Simple

    I haven't had a sniff of a holiday since last summer.

    In context

    The rival company hasn't had a sniff of the market lead since the new software was released three years ago.

  7. 07 B2 Upper Intermediate Informal

    interj.a word used in writing to show the sound of someone crying or smelling something.

    interj.an onomatopoeic representation of a nasal inhalation, typically used in informal writing to denote sadness or suspicion.

    Simple

    "I thought you forgot my birthday," she said. "Sniff."

    In context

    The script included the stage direction 'sniff' to indicate the character's burgeoning emotional distress during the final monologue.


From Middle English sniffen, of imitative origin.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Middle English sniffen
Level B1 · Intermediate
Frequency Frequent
Updated