clumpvscupTell them apart

Which to use

“clump” and “cup” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#31,110
“clump” frequency rank
#805
“cup” frequency rank
31915
confusion score

Side-by-Side Comparison

Feature clump cup
Definition A cluster or lump; an unshaped piece or mass. A concave vessel for drinking, usually made of opaque material (as opposed to a glass) and with a handle.

Where the eye mixes clump and cup

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
clump
3 ch
cup

Look-alike desk: clump vs cup

A purely visual mix-up. clump (/klʌmp/) and cup (/kʌp/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 2 letter(s) in length. Our composite confusion score for this pair is 31915, derived from the frequency rank of both members and their visual similarity.

clump is recorded at frequency rank #31,110, classified as anoun, pronounced /klʌmp/. cup is at rank #805, tagged as anoun, pronounced /kʌp/.

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 31915, this pair ranks #342,131 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of clump vs cup

Shared letters: cpu. Private to "clump": lm. Private to "cup": -.

"clump" · 5 letters · shape CCVCC  ·  "cup" · 3 letters · shape CVC

Known mistypes of this pair

  • clumpcclump · cllump · clmup · clummp · clumpp · clupm · culmp · lcump

Frequently Asked Questions

Can "clump" and "cup" be used interchangeably?
No. They are said differently (/klʌmp/ versus /kʌp/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary English text, does "clump" or "cup" show up more?
"cup" is the more common of the two: it sits at frequency rank #805 in our English list, against #31,110 for "clump". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Eye-level mix-up between "clump" and "cup" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "clump" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cup" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #342,131 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "clump" and "cup" also get mixed up with nearby pairs, the highest-scored neighbour is "chums vs clump". 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 #342,131 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list