Which to use
“bulb” and “butt” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #11,846
- “bulb” frequency rank
- #4,430
- “butt” frequency rank
- 16276
- confusion score
Side-by-Side Comparison
| Feature | bulb | butt |
|---|---|---|
| Definition | The bulb-shaped underground portion of a plant such as a tulip, consisting of a shortened stem and many fleshy scale leaves, from which the rest of the plant may be regrown. | The larger or thicker end of something; the blunt end, in distinction from the sharp or narrow end |
Where the eye mixes bulb and butt
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between bulb and butt
A purely visual mix-up. bulb (/ˈbʌlb/) and butt (/bʌt/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 16276, derived from the frequency rank of both members and their visual similarity.
bulb is recorded at frequency rank #11,846, classified as anoun, pronounced /ˈbʌlb/. butt is at rank #4,430, tagged as anoun, pronounced /bʌt/.
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 16276, this pair ranks #458,797 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of bulb vs butt
Shared letters: bu. Private to "bulb": l. Private to "butt": t.
"bulb" · 4 letters · shape CVCC · "butt" · 4 letters · shape CVCC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "bulb" for "butt" ever safe?
In ordinary English text, does "bulb" or "butt" show up more?
What to do next
Eye-level mix-up between "bulb" and "butt" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "bulb" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "butt" - compare definitions side by side with the headword page. Word entry
- This pair ranks #458,797 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "bulb" and "butt" also get mixed up with nearby pairs, the highest-scored neighbour is "Bui vs bulb". 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 #458,797 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.