# sniffer

> English word · Noun · IPA /ˈsnɪfɚ/ · frequency rank #47,338

## Definitions
1. One who sniffs.
2. The nose.
3. A software or hardware tool for intercepting and logging network traffic.

## Etymology
From sniff + -er.

## Easily confused with
- **suffer** (https://plainspell.com/en/vs/sniffer-vs-suffer)
- **sniper** (https://plainspell.com/en/vs/sniffer-vs-sniper)
- **staffer** (https://plainspell.com/en/vs/sniffer-vs-staffer)
- **stiffer** (https://plainspell.com/en/vs/sniffer-vs-stiffer)
- **sniff** (https://plainspell.com/en/vs/sniff-vs-sniffer)
- **Snider** (https://plainspell.com/en/vs/snider-vs-sniffer)
- **shifter** (https://plainspell.com/en/vs/shifter-vs-sniffer)
- **Shaffer** (https://plainspell.com/en/vs/shaffer-vs-sniffer)

## Common misspellings (9)
`nsiffer`, `sinffer`, `snfifer`, `snifefr`, `snifer`, `snifferr`, `sniffre`, `snniffer`, `ssniffer`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/sniffer