Which to use
“hack” is a verb and “haiku” is a noun - they look or sound alike but fill different roles in a sentence.
- #6,578
- “hack” frequency rank
- #26,105
- “haiku” frequency rank
- 32683
- confusion score
Side-by-Side Comparison
| Feature | hack | haiku |
|---|---|---|
| Definition | To chop or cut down in a rough manner. | A Japanese poem in three lines, the first and last consisting of five morae, and the second consisting of seven morae, usually with an emphasis on the season or a naturalistic theme. |
Where the eye mixes hack and haiku
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Look-alike desk: hack vs haiku
These two trip readers on the page rather than in the ear: hack is /hæk/ while haiku is /ˈhaɪkuː/. 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 (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 32683, derived from the frequency rank of both members and their visual similarity.
hack is recorded at frequency rank #6,578, classified as averb, pronounced /hæk/. haiku is at rank #26,105, tagged as anoun, pronounced /ˈhaɪkuː/.
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 32683, this pair ranks #335,784 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of hack vs haiku
Shared letters: ahk. Private to "hack": c. Private to "haiku": iu.
"hack" · 4 letters · shape CVCC · "haiku" · 5 letters · shape CVVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "hack" for "haiku" ever safe?
Which is more common, "hack" or "haiku"?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "hack" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "haiku" - compare definitions side by side with the headword page. Word entry
- This pair ranks #335,784 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "hack" and "haiku" also get mixed up with nearby pairs, the highest-scored neighbour is "haiku vs Hak". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #335,784 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.