English sevennight

← Old English seofon (derived)

← Old English nihta (mention)

← Old English niht (mention)

← Old English - (cognate)

← Old English seofonnihte (mention)

← English seven (mention)

← English night (mention)

← English - (cognate)

← English fortnight (mention)

← English sennight (doublet)

← Middle English sevenyght (inherited)

→ English sennight (doublet)

→ Old English seofonnihte (cognate)