English · Slang Attested

JM

In real, traceable use. Part of the curated seed collection; community review is coming.

Meaning · English

Initialism of John Major, Prime Minister of the United Kingdom from 1990 to 1997.

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Common questions

What does “JM” mean?

Initialism of John Major, Prime Minister of the United Kingdom from 1990 to 1997.

Is “JM” formal or informal?

JM is generally slang.

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