ins vs is, What's the Difference?

Which to use

“ins” is a noun and “is” is a verb - they look or sound alike but fill different roles in a sentence.

#8,050
“ins” frequency rank: #8
“is” frequency rank: 8058
confusion score

Side-by-Side Comparison

Feature	ins	is
Definition	plural of in	third-person singular simple present indicative of be

Where the eye mixes ins and is

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch

ins

2 ch

Why the eye confuses ins with is

These two trip readers on the page rather than in the ear: ins is /ɪnz/ while is is /ɪz/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 8058, derived from the frequency rank of both members and their visual similarity.

ins is recorded at frequency rank #8,050, classified as anoun, pronounced /ɪnz/. is is at rank #8, tagged as averb, pronounced /ɪz/.

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 8058, this pair ranks #504,314 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ins vs is

Shared letters: is. Private to "ins": n. Private to "is": -.

"ins" · 3 letters · shape VCC · "is" · 2 letters · shape VC

Frequently Asked Questions

Is swapping "ins" for "is" ever safe?

No - they are not even the same part of speech. "ins" is a noun and "is" a verb, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "ins" vs "is" - which ranks higher?

"is" is the more common of the two: it sits at frequency rank #8 in our English list, against #8,050 for "ins". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

Full dictionary entry for "ins" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "is" - compare definitions side by side with the headword page. Word entry
This pair ranks #504,314 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"ins" and "is" also get mixed up with nearby pairs, the highest-scored neighbour is "ins vs ith". Nearby pair

Confusion rank #504,314 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.