kneevsniTell them apart

Which to use

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

#4,098
“knee” frequency rank
#7,946
“ni” frequency rank
12044
confusion score

Side-by-Side Comparison

Feature knee ni
Definition In humans, the joint or the region of the joint in the middle part of the leg between the thigh and the shank. Initialism of noun inanimate.

Same sound, different letters: knee vs ni

Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 1 letter.

4 ch
knee
2 ch
ni

Homophone desk: knee vs ni

This is the hard kind. knee and ni are pronounced identically (/niː/) and both work as anoun. Neither the ear nor the grammar will rescue you; only the meaning does, so the glosses below are the whole decision. They differ by 2 letter(s) in length. Our composite confusion score for this pair is 12044, derived from the frequency rank of both members and their visual similarity.

knee is recorded at frequency rank #4,098, classified as anoun, pronounced /niː/. ni is at rank #7,946, tagged as anoun, pronounced /ni/.

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 12044, this pair ranks #483,741 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of knee vs ni

Shared letters: n. Private to "knee": ek. Private to "ni": i.

"knee" · 4 letters · shape CCVV  ·  "ni" · 2 letters · shape CV

Known mistypes of this pair

  • kneekene · kknee · kne · knnee · nkee

Frequently Asked Questions

Do "knee" and "ni" mean the same thing in a sentence?
No. They are pronounced the same (/niː/), which is exactly why they get swapped in writing, but the dictionary meanings above are different, and pronunciation is no guide here.
In ordinary English text, does "knee" or "ni" show up more?
"knee" is the more common of the two: it sits at frequency rank #4,098 in our English list, against #7,946 for "ni". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

"knee" and "ni" share a sound, keep the gloss open, then jump to the headword or a nearby trap.

  • Full dictionary entry for "knee" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ni" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #483,741 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "knee" and "ni" also get mixed up with nearby pairs, the highest-scored neighbour is "ni vs NPL". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #483,741 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