Old English sīþ

→ English since (mention)

→ English sith (inherited)

→ English sithen (mention)

→ Old English gesiþ (prefix)

→ Old English siþian (affix)

→ Old English siþfæt (affix)

→ Old English widsiþ (compound)

→ Old English isiþes (affix)

→ Old English siþmest (mention)

→ German Gesinde (mention)

→ Italian senno (cognate)

→ Old Frisian sith (cognate)