all day long

1. 1.

   during the entire day

   “light pours daylong into the parlor”

   Synonymsdaylong

Questions about all day long

What does all day long mean?

all day long means "during the entire day".

What is another word for all day long?

Close synonyms include daylong. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is all day long a common word?

all day long is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.