fido
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Fido¹
- /ˈfaɪ.dəʊ/ UK
- /ˈfaɪ.doʊ/ US
Rhymes with -aɪdəʊ
Where it comes from
From Spanish or Italian fido from Latin fīdus (“faithful”). Popularly claimed to be directly from Latin fīdō (“to trust, rely on”) instead of the Romance intermediary, but this might be folk etymology. The stereotypical dog's name is evidently very old; a newspaper from 1760 cites, "[a] small white Greyhound with a Collar, answers to the Name of Fido."
proper noun
- A stereotypical given name for a dog. He [Jimmy Goodson] also passed along some water-saving tips to customers from residents Ingrid and Doug Scott. “If it’s yellow, let it mellow; if it’s brown, flush it down. Urine is a sterile liquid and the toilet is not there for the purpose of Fido getting a drink or Junior floating his rubber duc
- Clipping of FidoNet
fido²
Where it comes from
An acronym of the words freaks, irregulars, defects, oddities, from the 1960s.
noun fidos
- A coin that is defective, having been incorrectly minted, often prized by collectors.
FIDO³
noun FIDOs · FDO
- Acronym of flight dynamics officer
proper noun
- Initialism of Fog Investigation and Dispersal Operation
- Initialism of Fast IDentity Online (Alliance), an industry association launched to develop and promote authentication standards.
Translations
Talk about this word "fido." Wiktionary, via Micwyn, micwyn.com/word/fido. Accessed 6 Nov. 2026. fido. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/fido "fido." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/fido.Cite this
@misc{fido_2026,
title = {fido},
howpublished = {Wiktionary, via Micwyn},
year = {2026},
url = {https://micwyn.com/word/fido},
urldate = {2026-11-06}
}
