gasesvsgassedConfusable pair

Quick tell: gases is a noun, gassed is an adjective, so they fill different roles in a sentence.

Which to use

“gases” is a noun and “gassed” is an adjective - they look or sound alike but fill different roles in a sentence.

#10,700
“gases” frequency rank
#28,560
“gassed” frequency rank
39260
confusion score

Side-by-Side Comparison

Feature gases gassed
Definition plural of gas In a gaseous state.

Where the eye mixes gases and gassed

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. gases runs 5 letters (CVCVC) against gassed's 6 (CVCCVC) - the length gap alone is often enough to separate them once you know to check it.

5 ch
gases
6 ch
gassed

Why the eye confuses gases with gassed

These two trip readers on the page rather than in the ear: gases is /ˈɡæsɪz/ while gassed is /ɡæst/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 39260, derived from the frequency rank of both members and their visual similarity.

gases is recorded at frequency rank #10,700, classified as anoun, pronounced /ˈɡæsɪz/. gassed is at rank #28,560, tagged as anadj, pronounced /ɡæst/.

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 39260, this pair ranks #278,306 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of gases vs gassed

Shared letters: aegs. Private to "gases": -. Private to "gassed": d.

"gases" · 5 letters · shape CVCVC  ·  "gassed" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • gases ← agses · gaess · gasess · gasse · gasses · ggases · gsaes
  • gassed ← agssed · gased · gasesd · gassde · gassedd · ggassed · gsased

Frequently Asked Questions

Can "gases" and "gassed" be used interchangeably?
No - they are not even the same part of speech. "gases" is a noun and "gassed" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "gases" or "gassed" show up more?
"gases" is the more common of the two: it sits at frequency rank #10,700 in our English list, against #28,560 for "gassed". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "gases" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "gassed" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #278,306 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "gases" and "gassed" also get mixed up with nearby pairs, the highest-scored neighbour is "gassed vs grasse". 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 #278,306 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