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Old English oft (inherited)
←
Middle English often (inherited)
←
Middle English selden (cognate)
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Middle English ofte (inherited)
←
Middle English oft (mention)
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North Frisian oftem (cognate)
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Proto-Germanic *ufta (inherited)
←
Proto-Germanic *uftō (mention)
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Icelandic oft (cognate)
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Saterland Frisian oafte (cognate)
→
Esperanto ofte (derived)
→
North Frisian oftem (cognate)
→
Norwegian Nynorsk ofte (cognate)
→
Pennsylvania German oft (cognate)
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Saterland Frisian oafte (link)