as the day is long
Unceasingly; very; thoroughly; to a very high degree.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
“He is as stubborn as the day is long.”
“My grandfather is honest as the day is long, so you can trust his advice completely.”
“The old lighthouse keeper was as lonely as the day is long, spending his quiet evenings watching the endless horizon.”
- 01
a cold day in July
The time of occurrence of an event that will never happen.
- 02
a day late and a dollar short
Too late and too feeble to achieve the desired effect.
- 03
a little of something goes a long way
Only a small amount of something is usually required to produce a great effect.
- 04
a week is a long time in politics
In politics, much change can occur in a short space of time.
- 05
a year and a day
A long time.
- 06
all one's born days
One's whole life.
- 07
bad hair day
A day when things seem to be unmanageable or go wrong.
- 08
bad old days
The past, seen as a time when things were worse.
Last updated August 10, 2026