issavsisuWhat's the difference?

Quick tell: issa is a contraction, isu is a noun, so they fill different roles in a sentence.

Which to use

“issa” is a contraction and “isu” is a noun - they look or sound alike but fill different roles in a sentence.

#21,249
“issa” frequency rank
#37,989
“isu” frequency rank
59238
confusion score

Side-by-Side Comparison

Feature issa isu
Definition Contraction of it's + a. An individual seat in the loft-like balcony of a sumo arena.

Where the spellings diverge

Shared letters are muted; the letters that actually set issa and isu apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

4 ch
issa
3 ch
isu

Spelling & Dictionary Insight

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: issa is acontraction and isuanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 59238, derived from the frequency rank of both members and their visual similarity.

issa is recorded at frequency rank #21,249, classified as acontraction, pronounced /ˈɪsə/. isu is at rank #37,989, tagged as anoun.

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 59238, this pair ranks #107,467 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of issa vs isu

Shared letters: is. Private to "issa": a. Private to "isu": u.

"issa" · 4 letters · shape VCCV  ·  "isu" · 3 letters · shape VCV

Known mistypes of this pair

  • issaisas · sisa

Frequency comparison

issa#21,249
isu#37,989

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "issa" and "isu" be used interchangeably?
No - they are not even the same part of speech. "issa" is a contraction and "isu" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "issa" or "isu"?
"issa" is the more common of the two: it sits at frequency rank #21,249 in our English list, against #37,989 for "isu". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering issa vs isu

The fastest way to pick the right one every time.

  • Check the role first: if you need a contraction, it's “issa”; for a noun, it's “isu”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “issa” entry
  • Browse more pairs most likely to be confused. Most confusable

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list