DictionarydaylongThroughout a whole day
adjective / adverb

daylong

DAY-long/ˈdeɪlɔŋ/

Lasting or continuing for a whole day.

The woman's daylong weaving continues from sunrise through midday to sunset.

A text-free three-panel sequence shows one woman weaving the same rug from sunrise through midday to sunset.
Etymology

In this compound, long measures duration rather than physical length: something extends through a whole day. The same combination already meant “lasting all day” in Old English.

More examples

  • We pack lunch for our daylong hike.
  • Rain falls daylong, keeping us inside until evening.
  • The daylong workshop includes several breaks.

Similar words

all-day
Used before a noun, rather than as an adverb.
nonstop
Emphasizes the absence of breaks, not a whole day's duration.