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OE f
stan ＜ Gmc 
fast
jan to hold fast, observe (Du. vasten / G fasten / Goth. fastan) ← 🔗⭐🔉
OE fstan ＜ Gmc fastjan to hold fast, observe (Du. vasten / G fasten / Goth. fastan) ← fastuz (↑)
fast３ /f
st ｜ f
st/
研究社新英和大辞典 ページ 189252 での【OE fstan ＜ Gmc fastjan to hold fast, observe ←】単語。
