probevsproblemWhat's the difference?

Which to use

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

#7,266
“probe” frequency rank
#391
“problem” frequency rank
7657
confusion score

Side-by-Side Comparison

Feature probe problem
Definition Any of various medical instruments used to explore wounds, organs, etc. A difficulty that has to be resolved or dealt with.

Where the eye mixes probe and problem

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.

5 ch
probe
7 ch
problem

Why the eye confuses probe with problem

A purely visual mix-up. probe (/pɹəʊb/) and problem (/ˈpɹɒbləm/) 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 7657, derived from the frequency rank of both members and their visual similarity.

probe is recorded at frequency rank #7,266, classified as anoun, pronounced /pɹəʊb/. problem is at rank #391, tagged as anoun, pronounced /ˈpɹɒbləm/.

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 7657, this pair ranks #506,164 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of probe vs problem

Shared letters: beopr. Private to "probe": -. Private to "problem": lm.

"probe" · 5 letters · shape CCVCV  ·  "problem" · 7 letters · shape CCVCCVC

Known mistypes of this pair

  • probeporbe · pprobe · prboe · probbe · proeb · prrobe · rpobe
  • problemporblem · pproblem · prbolem · probblem · probelm · problemm · probllem · problme

Frequently Asked Questions

Is swapping "probe" for "problem" ever safe?
No. They are said differently (/pɹəʊb/ versus /ˈpɹɒbləm/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "probe" or "problem"?
"problem" is the more common of the two: it sits at frequency rank #391 in our English list, against #7,266 for "probe". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

  • Full dictionary entry for "probe" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "problem" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #506,164 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "probe" and "problem" also get mixed up with nearby pairs, the highest-scored neighbour is "probe vs prude". 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 #506,164 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