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Definition of wifi

wifi

/ˈwaɪ.faɪ/
wi · fi
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wifi Lexical Profile

wifi Game Scores & Validity

• noun

1

A facility or technology allowing computers, smartphones, and other electronic devices to connect to the internet or communicate with one another wirelessly within a particular area using radio waves.

Example

"The coffee shop offers free wifi to all of its customers."

Synonyms
View all synonyms for wifi

Word Nuance & Usage

Contrary to widespread popular belief, 'wifi' (officially trademarked as 'Wi-Fi') is not an abbreviation for 'wireless fidelity'; it was coined as a catchy marketing name modeled on 'hi-fi'.

• Nearby Words

wifeless
wifely
wifey
wifi
wig
wigan
wigeon

Word Origin & Etymology

Coined in 1999 by the branding firm Interbrand for the Wireless Ethernet Compatibility Alliance (now the Wi-Fi Alliance) as a play on the audio term 'hi-fi'.

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Wifi. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/wifi
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