nighttime
UK[ˈnaɪt.taɪm]US[ˈnaɪt.taɪm]
n
The time of darkness between one day and the next; the night.
Morpheme Breakdown
night
time
night
dark period
time
period
Etymology
The word "nighttime" is a transparent compound formed from two native English elements, both with deep Indo-European roots. The first element, "night," descends from the Proto-Indo-European nókʷts, a fundamental concept for the dark period, which evolved directly into the Old English niht. The second element, "time," originates from the Proto-Indo-European root dī-, meaning "to cut" or "to divide," which evolved into the concept of a measured or appointed period in Germanic languages. The compound logic is perfectly literal: it simply names the specific "time" or "period" which is "night," creating a more precise synonym that emphasizes duration rather than just the state of darkness.
Analysis
Structure: night (dark period) + time (period)
- night: From Old English niht, Proto-Germanic nahts, Proto-Indo-European nókʷts. The core element denoting the period of darkness.
- time: From Old English tīma, Proto-Germanic tīmô, Proto-Indo-European dī- ("to divide, cut"). A noun-forming suffix indicating a period or duration.
Examples
The city is much quieter during the nighttime.
Animals like owls are most active at nighttime.
The security lights are programmed to turn on automatically at nighttime.