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Why do Americans use ‘mom’ and not mum also change other words?

Dr. Aris Thorne
Dr. Aris Thorne
Senior Science Editor · Mar 18, 2026 · Updated Apr 13, 2026

For the same reason you don't use Ye Old English like you read in Shakespeare's plays, or even the most obscure English from way before that. Language change, and that's fleek, it's lit, it's groovy, and it's far out, man.

40
Words

1 min
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#353
of 500 in General Knowledge

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The Short Answer

For the same reason you don't use Ye Old English like you read in Shakespeare's plays, or even the most obscure English from way before that. Language change, and that's fleek, it's lit, it's groovy, and it's far out, man.

Analysis

Key Concepts: It's, english, reason

This explanation focuses on it's, english, reason and spans 40 words across 2 sentences. At 41% below the average General Knowledge explanation (68 words), the answer takes a direct, no-frills approach — sometimes the simplest explanation is the most effective.

What This Answer Covers

This is a focused, single-point answer that gets directly to the core of the question without detours.

How This Compares in General Knowledge

Ranked #353 of 500 General Knowledge questions by answer depth (top 71%). This is in the concise tier — a focused explanation that prioritizes clarity over exhaustiveness. Many readers prefer this level of directness.

Frequently Asked Questions

Is there a simple explanation for why americans use 'mom' and not mum also change other words?

For the same reason you don't use Ye Old English like you read in Shakespeare's plays, or even the most obscure English from way before that. Language change, and that's fleek, it's lit, it's groovy, and it's far out, man.

How detailed is this explanation compared to similar General Knowledge questions?

This is a focused answer at 40 words, ranked #353 of 500 General Knowledge questions by depth. The key concepts covered are it's, english, reason.

What approach does this answer take to explain americans use 'mom' and not mum also change other words?

The explanation uses root cause analysis across 40 words. It is categorized under General Knowledge and addresses the question through 1 analytical lens.