illvsIrvWhat's the difference?

Quick tell: ill is a adjective, Irv is a name, so they fill different roles in a sentence.

Which to use

“ill” is an adjective and “Irv” is a name - they look or sound alike but fill different roles in a sentence.

#1,946
“ill” frequency rank
#48,831
“Irv” frequency rank
50777
confusion score

Side-by-Side Comparison

Feature ill Irv
Definition Evil; wicked (of people). A male given name.

Where the spellings diverge

Shared letters are muted; the letters that actually set ill and Irv apart are highlighted. They share 1 letter in sequence, which is exactly why the eye skips the difference.

3 ch
ill
3 ch
Irv

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: ill is /ɪl/ while Irv is /ɝv/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (adjective vs name), which is usually the fastest check. Our composite confusion score for this pair is 50777, derived from the frequency rank of both members and their visual similarity.

ill is recorded at frequency rank #1,946, classified as anadj, pronounced /ɪl/. Irv is at rank #48,831, tagged as aname, pronounced /ɝv/.

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 50777, this pair ranks #171,239 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ill vs Irv

Shared letters: i. Private to "ill": l. Private to "Irv": rv.

"ill" · 3 letters · shape VCC  ·  "Irv" · 3 letters · shape VCC

Frequency comparison

ill#1,946
Irv#48,831

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "ill" and "Irv" be used interchangeably?
No - they are not even the same part of speech. "ill" is an adjective and "Irv" a name, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "ill" or "Irv"?
"ill" is the more common of the two: it sits at frequency rank #1,946 in our English list, against #48,831 for "Irv". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering ill vs Irv

The fastest way to pick the right one every time.

  • Check the role first: if you need an adjective, it's “ill”; for a name, it's “Irv”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “ill” 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