Etymograph

English

setfast

From set + fast.

A compound of set + fast

Proto-Indo-European *sed- ‘to sit’

…

Proto-Germanic *satjaną ‘to set’

Proto-West Germanic *sattjan ‘to set’

Old English settan ‘to set’

Middle English setten ‘to seat’

English set

Proto-Germanic *fastuz ‘fixed’

Proto-West Germanic *fast ‘fixed’

Old English fæst ‘firm’

Middle English fast

English fast

Today it means

noun A tumour on a horse's back.

Sources

Sources: Wiktionary, “setfast”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / setfast

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