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Welsh bach
Proto-Brythonic *bɨx (inherited)
Proto-Celtic *bikkos (inherited)
Proto-Celtic *bakkos (inherited)
Welsh to bach (link)
Welsh tŷ bach (link)
Welsh bychan (link)
Welsh bach cyrliog (link)
Welsh bach petryal (link)
Proto-Indo-European *bak- (inherited)
Old Welsh bach (inherited)

English Vaughan (mention)
Welsh bachgen (mention)
Welsh tŷ bach (compound)
Welsh bych (doublet)
Welsh cromfach (affix)
Welsh cilfach (affix)
Welsh Arth Fach (compound)
Welsh cacen fach (compound)
Welsh picen fach (compound)
Welsh carfil bach (compound)
Spanish pequeño (cognate)
Irish beag (cognate)
Scottish Gaelic beag (cognate)