IJ vs IPA, What's the Difference?

Which to use

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

#46,535
“IJ” frequency rank: #19,373
“IPA” frequency rank: 65908
confusion score

Side-by-Side Comparison

Feature	IJ	IPA
Definition	A lake (formerly a bay) adjoining the city of Amsterdam, Netherlands.	Initialism of International Phonetic Alphabet.

Where the eye mixes IJ and IPA

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. IJ runs 2 letters (VC) against IPA's 3 (VCV) - the length gap alone is often enough to separate them once you know to check it.

2 ch

3 ch

IPA

Why the eye confuses IJ with IPA

A purely visual mix-up. IJ (/eɪ/) and IPA (/ˌaɪ.piːˈeɪ/) 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 65908, derived from the frequency rank of both members and their visual similarity.

IJ is recorded at frequency rank #46,535, classified as aname, pronounced /eɪ/. IPA is at rank #19,373, tagged as aname, pronounced /ˌaɪ.piːˈeɪ/.

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 65908, this pair ranks #70,507 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of IJ vs IPA

Shared letters: i. Private to "IJ": j. Private to "IPA": ap.

"IJ" · 2 letters · shape VC · "IPA" · 3 letters · shape VCV

Frequently Asked Questions

Do "IJ" and "IPA" mean the same thing in a sentence?

No. They are said differently (/eɪ/ versus /ˌaɪ.piːˈeɪ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

Which is more common, "IJ" or "IPA"?

"IPA" is the more common of the two: it sits at frequency rank #19,373 in our English list, against #46,535 for "IJ". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

Full dictionary entry for "IJ" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "IPA" - compare definitions side by side with the headword page. Word entry
This pair ranks #70,507 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"IJ" and "IPA" also get mixed up with nearby pairs, the highest-scored neighbour is "IJ vs ith". Nearby pair

Confusion rank #70,507 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.