Which to use
“underlined” is a verb and “undersized” is an adjective - they look or sound alike but fill different roles in a sentence.
- #25,629
- “underlined” frequency rank
- #47,984
- “undersized” frequency rank
- 73613
- confusion score
Side-by-Side Comparison
| Feature | underlined | undersized |
|---|---|---|
| Definition | simple past and past participle of underline | below the usual or expected size |
Letter map: underlined vs undersized
Shared letters muted; letters that set underlined and undersized apart highlighted. Shared run: 8.
Part-of-speech tell for underlined / undersized
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: underlined is averb and undersizedanadjective. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 73613, derived from the frequency rank of both members and their visual similarity.
underlined is recorded at frequency rank #25,629, classified as averb. undersized is at rank #47,984, tagged as anadj.
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 73613, this pair ranks #39,052 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of underlined vs undersized
Shared letters: deinru. Private to "underlined": l. Private to "undersized": sz.
"underlined" · 10 letters · shape VCCVCCVCVC · "undersized" · 10 letters · shape VCCVCCVCVC
Known mistypes of this pair
- underlined ← nuderlined · udnerlined · undderlined · undelrined · underilned · underliend · underlinde · underlinedd
- undersized ← nudersized · udnersized · unddersized · underiszed · underrsized · undersiezd · undersizde · undersizedd
Frequently Asked Questions
Can "underlined" and "undersized" be used interchangeably?
Which is more common, "underlined" or "undersized"?
Useful next steps
Pair "underlined" vs "undersized" is on the table, pick a follow-up below.
- Full dictionary entry for "underlined" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "undersized" - compare definitions side by side with the headword page. Word entry
- This pair ranks #39,052 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "underlined" and "undersized" also get mixed up with nearby pairs, the highest-scored neighbour is "underside vs undersized". 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 #39,052 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.