plopvsproWhich spelling fits?

Which to use

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

#46,702
“plop” frequency rank
#1,232
“pro” frequency rank
47934
confusion score

Side-by-Side Comparison

Feature plop pro
Definition A sound or action like liquid hitting a hard surface, or an object falling into a body of water. An advantage of something, especially when contrasted with its disadvantages (cons).

Where the eye mixes plop and pro

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

4 ch
plop
3 ch
pro

Visual trap between plop and pro

A purely visual mix-up. plop (/plɒp/) and pro (/pɹəʊ/) 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 1 letter(s) in length. Our composite confusion score for this pair is 47934, derived from the frequency rank of both members and their visual similarity.

plop is recorded at frequency rank #46,702, classified as anoun, pronounced /plɒp/. pro is at rank #1,232, tagged as anoun, pronounced /pɹəʊ/.

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 47934, this pair ranks #197,808 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of plop vs pro

Shared letters: op. Private to "plop": l. Private to "pro": r.

"plop" · 4 letters · shape CCVC  ·  "pro" · 3 letters · shape CCV

Known mistypes of this pair

  • ploplpop · pllop · plopp · plpo · polp · pplop

Frequently Asked Questions

Do "plop" and "pro" mean the same thing in a sentence?
No. They are said differently (/plɒp/ versus /pɹəʊ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "plop" vs "pro" - which ranks higher?
"pro" is the more common of the two: it sits at frequency rank #1,232 in our English list, against #46,702 for "plop". 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 "plop" and "pro" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "plop" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "pro" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #197,808 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "plop" and "pro" also get mixed up with nearby pairs, the highest-scored neighbour is "plop vs poops". 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 #197,808 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