infantvsinstantWhich spelling fits?

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

Which to use

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

#38,860
“infant” frequency rank
#902
“instant” frequency rank
39762
confusion score

Side-by-Side Comparison

Feature infant instant
Definition Titre qu’on donnait aux enfants puînés des rois d’Espagne et du Portugal ainsi qu’à ceux du duc de Parme. Qui est pressant.

Where the eye mixes infant and instant

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. infant runs 6 letters (VCCVCC) against instant's 7 (VCCCVCC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
infant
7 ch
instant

Visual trap between infant and instant

These two trip readers on the page rather than in the ear: infant is \ɛ̃.fɑ̃\ while instant is \ɛ̃s.tɑ̃\. 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 39762, derived from the frequency rank of both members and their visual similarity.

infant is recorded at frequency rank #38,860, classified as anoun, pronounced \ɛ̃.fɑ̃\. instant is at rank #902, tagged as anadj, pronounced \ɛ̃s.tɑ̃\.

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 39762, this pair ranks #245,592 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of infant vs instant

Shared letters: aint. Private to "infant": f. Private to "instant": s.

"infant" · 6 letters · shape VCCVCC  ·  "instant" · 7 letters · shape VCCCVCC

Known mistypes of this pair

  • infant ← ifnant · inafnt · infannt · infantt · infatn · inffant · infnat · innfant
  • instant ← innstant · insatnt · insstant · instannt · instantt · instatn · instnat · insttant

Frequently Asked Questions

Do "infant" and "instant" mean the same thing in a sentence?
No - they are not even the same part of speech. "infant" is a noun and "instant" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "infant" or "instant"?
"instant" is the more common of the two: it sits at frequency rank #902 in our French list, against #38,860 for "infant". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "infant" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "instant" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #245,592 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "infant" and "instant" also get mixed up with nearby pairs, the highest-scored neighbour is "infant vs infante". 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 #245,592 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