Which to use
“ultimate” is an adjective and “ultimatum” is a noun - they look or sound alike but fill different roles in a sentence.
- #2,869
- “ultimate” frequency rank
- #21,106
- “ultimatum” frequency rank
- 23975
- confusion score
Side-by-Side Comparison
| Feature | ultimate | ultimatum |
|---|---|---|
| Definition | Final; last in a series. | A final statement of terms or conditions made by one party to another, especially one that expresses a threat of reprisal or war if the terms are not met before some specified date and time. |
Where the spellings diverge
Shared letters are muted; the letters that actually set ultimate and ultimatum apart are highlighted. They share 7 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
These two trip readers on the page rather than in the ear: ultimate is /ˈʌltɪmət/ while ultimatum is /ˌʌl.tɪˈmeɪ.təm/. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 23975, derived from the frequency rank of both members and their visual similarity.
ultimate is recorded at frequency rank #2,869, classified as anadj, pronounced /ˈʌltɪmət/. ultimatum is at rank #21,106, tagged as anoun, pronounced /ˌʌl.tɪˈmeɪ.təm/.
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 23975, this pair ranks #405,420 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of ultimate vs ultimatum
Shared letters: ailmtu. Private to "ultimate": e. Private to "ultimatum": -.
"ultimate" · 8 letters · shape VCCVCVCV · "ultimatum" · 9 letters · shape VCCVCVCVC
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "ultimate" and "ultimatum" be used interchangeably?
Which is more common, "ultimate" or "ultimatum"?
Remembering ultimate vs ultimatum
The fastest way to pick the right one every time.
- Check the role first: if you need an adjective, it's “ultimate”; for a noun, it's “ultimatum”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “ultimate” entry
- Browse more pairs most likely to be confused. Most confusable