Detect vs Sniff

When to use each in English, with meaning, register, and examples.

Detect

Top 2,000 (common)B2verb

Sniff

Top 2,000 (common)
 DetectSniff
Pronunciation🇬🇧 //dɪˈtɛkt//🇺🇸 //dɪˈtɛkt//🇬🇧 //snɪf//🇺🇸 //snɪf//
MeaningTo notice or discover somethingTo smell something by taking in air through your nose.
ExampleThe scientist was able to detect the virus in the sample.She decided to sniff the flowers in the garden.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB2-
Part of speechverb
Collocationsdetect a signal, detect a problem, detect changessniff around, sniff out, sniff deeply
Antonymsmiss, ignoreblow, exhale
Common mistakesConfusing with 'detective', which refers to a person, not the action., Using intransitively; 'detect' requires an object.Confused with 'scent' - 'sniff' is the action, while 'scent' is the smell itself., Using 'sniff' as a noun; it is primarily used as a verb., Overusing 'sniff' in formal writing.
Usage notesCommonly used in both scientific and everyday contexts. Avoid using in very casual speech.Use 'sniff' when talking about smelling something, often to detect a scent. It's neutral and can be used in most contexts. Avoid using it in overly formal situations.

See it in real clips

Detect
Sniff

Frequently asked questions: Detect vs Sniff

What's the difference between Detect and Sniff?

Detect: To notice or discover something Sniff: To smell something by taking in air through your nose.

Can you show an example of each?

Detect: The scientist was able to detect the virus in the sample. Sniff: She decided to sniff the flowers in the garden.

Can I use Detect and Sniff interchangeably?

Not always. Detect and Sniff are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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