stopvssumpWhat's the difference?

Quick tell: stop is a verb, sump is a noun, so they fill different roles in a sentence.

Which to use

“stop” is a verb and “sump” is a noun - they look or sound alike but fill different roles in a sentence.

#283
“stop” frequency rank
#41,400
“sump” frequency rank
41683
confusion score

Side-by-Side Comparison

Feature stop sump
Definition To cease moving. A hollow or pit into which liquid drains, such as a cesspool, cesspit or sink.

Where the eye mixes stop and sump

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
stop
4 ch
sump

Look-alike desk: stop vs sump

These two trip readers on the page rather than in the ear: stop is /stɒp/ while sump is /sʌmp/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 41683, derived from the frequency rank of both members and their visual similarity.

stop is recorded at frequency rank #283, classified as averb, pronounced /stɒp/. sump is at rank #41,400, tagged as anoun, pronounced /sʌmp/.

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 41683, this pair ranks #256,039 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of stop vs sump

Shared letters: ps. Private to "stop": ot. Private to "sump": mu.

"stop" · 4 letters · shape CCVC  ·  "sump" · 4 letters · shape CVCC

Known mistypes of this pair

  • stopsotp · sstop · stopp · stpo · sttop · tsop
  • sumpsmup · ssump · summp · sumpp · supm · usmp

Frequently Asked Questions

Can "stop" and "sump" be used interchangeably?
No - they are not even the same part of speech. "stop" is a verb and "sump" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "stop" vs "sump" - which ranks higher?
"stop" is the more common of the two: it sits at frequency rank #283 in our English list, against #41,400 for "sump". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "stop" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sump" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #256,039 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "stop" and "sump" also get mixed up with nearby pairs, the highest-scored neighbour is "sump vs sura". 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 #256,039 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