+Q Celtic denotes a branch of the [Celtic languages](/wiki/celtic_languages) characterized by its preservation of the Proto-Indo-European *kw* sound. This distinction separates it from [P Celtic](/wiki/p_celtic) languages, which transformed *kw* into *p*, with all modern Goidelic languages falling into the Q-Celtic group.
+## See also
+- [P Celtic](/wiki/p_celtic)
+- [Goidelic languages](/wiki/goidelic_languages)
+- [Insular Celtic](/wiki/insular_celtic)
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