seven-night

The compound "seven-night" is a transparent formation from Old English, directly combining the cardinal number "seven" with the noun "night." It reflects an ancient Germanic method of reckoning time by counting nights, a practice rooted in a lunar calendar and a cultural conception where the day begins at dusk. This logic is evident in related terms like "fortnight" (fourteen nights). While the modern English "week" (from a Germanic root meaning "a turning" or "succession") became the dominant term, "seven-night" survives as an archaic or dialectal word, preserving a literal, morpheme-by-morpheme description of a seven-day period.

Structure: seven (cardinal number) + night (period of darkness) - seven: From Old English seofon, of Germanic origin; related to Dutch zeven and German sieben, from an Indo-European root shared by Latin septem and Greek hepta. Functions as the cardinal number 7. - night: From Old English niht, neaht, of Germanic origin; related to Dutch nacht and German Nacht, from an Indo-European root shared by Latin nox and Greek nux. Functions as a noun denoting the period of darkness between one day and the next.