mother of all
Used before a plural noun to form a compound noun having the sense of: the greatest or largest of (its kind); the most epic example of (its kind).
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
“That storm was the mother of all rainstorms.”
“I have the mother of all headaches after working on the computer all day.”
“After weeks of preparation, the team faced the mother of all challenges during the final presentation.”
“My brother spent three hours cleaning the kitchen after he accidentally created the mother of all messes while trying to bake a cake.”
“The mountain pass was blocked by the mother of all snowstorms, leaving the travelers stranded in the wilderness for three days.”
Calque of Arabic أُمّ (ʔumm, “mother (of)”). Popularized and given its current sense by Saddam Hussein's claim that the impending Gulf War would be the أُمّ المَعَارِك (ʔumm al-maʕārik, “mother of (all) battles”), though mother had long been used in somewhat similar senses in English, and other familial terms are used with the same meaning, like granddaddy (of all traffic jams) and father (of all battles).
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and his mother
Serves as an intensifier for an inclusive noun or phrase such as everyone, anyone, each someone or all someones.
- 02
be mother
To pour out tea for others.
- 03
black over Bill's mother's
Describing rain-bearing dark clouds on the horizon.
- 04
like mother, like daughter
A daughter takes after her mother.
- 05
mother hen
An outspoken and overprotective woman or person dealing with others' affairs; especially, an assertive matriarch.
- 06
Mother Hubbard
Empty.
- 07
mother lode
Any source of valuable or useful material.
- 08
patience of Mother Teresa
A great deal of patience.
Last updated August 10, 2026