Which to use
“undermining” and “underpinning” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #19,238
- “undermining” frequency rank
- #33,896
- “underpinning” frequency rank
- 53134
- confusion score
Side-by-Side Comparison
| Feature | undermining | underpinning |
|---|---|---|
| Definition | The act or process by which something is undermined. | A support or foundation, especially as a structure of masonry that supports a wall. |
Letter map: undermining vs underpinning
Shared letters muted; letters that set undermining and underpinning apart highlighted. Shared run: 10.
Corpus notes: undermining and underpinning
undermining and underpinning are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 53134, derived from the frequency rank of both members and their visual similarity.
undermining is recorded at frequency rank #19,238, classified as anoun. underpinning is at rank #33,896, tagged as anoun.
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 53134, this pair ranks #151,462 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of undermining vs underpinning
Shared letters: deginru. Private to "undermining": m. Private to "underpinning": p.
"undermining" · 11 letters · shape VCCVCCVCVCC · "underpinning" · 12 letters · shape VCCVCCVCCVCC
Known mistypes of this pair
- undermining ← nudermining · udnermining · unddermining · undemrining · underimning · undermiinng · underminign · underminingg
- underpinning ← nuderpinning · udnerpinning · undderpinning · undeprinning · underipnning · underpining · underpininng · underpinnign
Frequently Asked Questions
Can "undermining" and "underpinning" be used interchangeably?
Which is more common, "undermining" or "underpinning"?
After this comparison
You've compared "undermining" and "underpinning". Here's where to go from here.
- Full dictionary entry for "undermining" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "underpinning" - compare definitions side by side with the headword page. Word entry
- This pair ranks #151,462 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "undermining" and "underpinning" also get mixed up with nearby pairs, the highest-scored neighbour is "underlining vs underpinning". 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 #151,462 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.