←
Old English blīþe (inherited)
←
Middle English blithe (inherited)
←
Proto-Germanic *blīþiz (inherited)
←
Proto-West Germanic *blīþī (inherited)
←
Proto-Indo-European *bʰel- (root)
←
Proto-Indo-European *bʰlī- (derived)
←
Proto-Indo-European *bʰel- (derived)
→
West Frisian bliid (cognate)
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Saterland Frisian bliede (link)