IJ vs IMO, What's the Difference?

Which to use

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

#46,535
“IJ” frequency rank: #11,045
“IMO” frequency rank: 57580
confusion score

Side-by-Side Comparison

Feature	IJ	IMO
Definition	A lake (formerly a bay) adjoining the city of Amsterdam, Netherlands.	Initialism of International Maritime Organization.

Letter map: IJ vs IMO

Shared letters muted; letters that set IJ and IMO apart highlighted. Shared run: 1.

2 ch

3 ch

IMO

Spelling & dictionary notes on IJ vs IMO

IJ and IMO are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 57580, 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/. IMO is at rank #11,045, tagged as aname.

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 57580, this pair ranks #118,390 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of IJ vs IMO

Shared letters: i. Private to "IJ": j. Private to "IMO": mo.

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

Frequently Asked Questions

Is swapping "IJ" for "IMO" ever safe?

No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

Frequency check: "IJ" vs "IMO" - which ranks higher?

"IMO" is the more common of the two: it sits at frequency rank #11,045 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.

What to do next

Pair "IJ" vs "IMO" is on the table, pick a follow-up below.

Full dictionary entry for "IJ" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "IMO" - compare definitions side by side with the headword page. Word entry
This pair ranks #118,390 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"IJ" and "IMO" also get mixed up with nearby pairs, the highest-scored neighbour is "IJ vs ith". Nearby pair

Confusion rank #118,390 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.