Which to use
“Unix” is a name and “until” is a preposition - they look or sound alike but fill different roles in a sentence.
- #19,495
- “Unix” frequency rank
- #223
- “until” frequency rank
- 19718
- confusion score
Side-by-Side Comparison
| Feature | Unix | until |
|---|---|---|
| Definition | An operating system that shares the original source code by Dennis Ritchie and Ken Thompson. | Up to the time of (something happening); pending. |
Where the spellings diverge
Shared letters are muted; the letters that actually set Unix and until apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
Unix and until form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 19718, derived from the frequency rank of both members and their visual similarity.
Unix is recorded at frequency rank #19,495, classified as aname, pronounced /ˈjuː.nɪks/. until is at rank #223, tagged as aprep, pronounced /ʌnˈtɪl/.
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 19718, this pair ranks #436,202 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Frequency comparison
Frequently Asked Questions
Can "Unix" and "until" be used interchangeably?
Remembering Unix vs until
The fastest way to pick the right one every time.
- Check the role first: if you need a name, it's “Unix”; for a preposition, it's “until”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “Unix” entry
- Browse more pairs most likely to be confused. Most confusable