Of or relating to ancient Gaul or the Gauls; resembling or characteristic of the ancient Celtic people of Gaul.
A variant or dialectal form of 'Gaulish,' using '-sh' instead of '-ish.' Both suffixes derive from Old English and function identically to form adjectives from nouns, though '-ish' is far more common in modern English.
Language change happens subtly—'gaulsh' was probably once acceptable alongside 'gaulish,' but standardization and education made one form win out, showing how dictionaries don't decide language; widespread usage and convention do.
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