argvsargonTell them apart

Quick tell: arg is a adjective, argon is a noun, so they fill different roles in a sentence.

Which to use

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

#34,419
“arg” frequency rank
#45,441
“argon” frequency rank
79860
confusion score

Side-by-Side Comparison

Feature arg argon
Definition Mauvais. Élément chimique de numéro atomique 18 et de symbole Ar qui fait partie de la série chimique de gaz nobles.

Where the eye mixes arg and argon

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

3 ch
arg
5 ch
argon

Visual trap between arg and argon

These two trip readers on the page rather than in the ear: arg is \ark\ while argon is \aʁ.ɡɔ̃\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “arg” sits inside “argon”, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 79860, derived from the frequency rank of both members and their visual similarity.

arg is recorded at frequency rank #34,419, classified as anadj, pronounced \ark\. argon is at rank #45,441, tagged as anoun, pronounced \aʁ.ɡɔ̃\.

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 79860, this pair ranks #22,311 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of arg vs argon

Shared letters: agr. Private to "arg": -. Private to "argon": no.

"arg" · 3 letters · shape VCC  ·  "argon" · 5 letters · shape VCCVC

Known mistypes of this pair

  • argonagron · arggon · argno · argonn · arogn · arrgon · ragon

Frequently Asked Questions

Is swapping "arg" for "argon" ever safe?
No - they are not even the same part of speech. "arg" is an adjective and "argon" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "arg" or "argon" show up more?
"arg" is the more common of the two: it sits at frequency rank #34,419 in our French list, against #45,441 for "argon". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "arg" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "argon" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #22,311 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "arg" and "argon" also get mixed up with nearby pairs, the highest-scored neighbour is "argon vs Argonne". 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 #22,311 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list