mivsmumTell them apart

Which to use

“mi” and “mum” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#4,315
“mi” frequency rank
#3,573
“mum” frequency rank
7888
confusion score

Side-by-Side Comparison

Feature mi mum
Definition A syllable used in sol-fa (solfège) to represent the third note of a major scale. Mother.

Where the eye mixes mi and mum

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

2 ch
mi
3 ch
mum

Why the eye confuses mi with mum

A purely visual mix-up. mi (/miː/) and mum (/mʌm/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 7888, derived from the frequency rank of both members and their visual similarity.

mi is recorded at frequency rank #4,315, classified as anoun, pronounced /miː/. mum is at rank #3,573, tagged as anoun, pronounced /mʌm/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 7888, this pair ranks #505,116 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of mi vs mum

Shared letters: m. Private to "mi": i. Private to "mum": u.

"mi" · 2 letters · shape CV  ·  "mum" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "mi" for "mum" ever safe?
No. They are said differently (/miː/ versus /mʌm/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "mi" or "mum"?
"mum" is the more common of the two: it sits at frequency rank #3,573 in our English list, against #4,315 for "mi". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "mi" and "mum" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "mi" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "mum" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #505,116 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "mi" and "mum" also get mixed up with nearby pairs, the highest-scored neighbour is "mi vs MMP". Nearby pair

Confusion rank #505,116 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list