1. all day - Adjective
2. all day - Adverb
all day (not comparable)
For the period of an entire day, or at least during all the daytime of a day.
We walked all day.
(figuratively) Easily; handily; in spades; by far.
Well, for twenty quid we're having it — it's worth that all day long.
Lasting throughout the whole day.
an all-day event
Available throughout the whole day.
all-day breakfast
all-day
It is folly to abstain all day long from food, but fail to abstain from sin and selfishness. John Chrysostom
Everyone gets so much information all day long that they lose their common sense. Gertrude Stein
A vacation is having nothing to do and all day to do it in. Robert Orben
Get a name to rise early, and you may lie all day. Italian Proverb
If you eat a live toad first thing in the morning, nothing worse will happen all day long. American Proverb
The lawsuit of a fool keeps the court all day. Kikuyu Proverb