nahvsnaiWhich spelling fits?

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

Which to use

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

#14,411
“nah” frequency rank
#43,733
“nai” frequency rank
58144
confusion score

Side-by-Side Comparison

Feature nah nai
Definition Variante de nahe Madre.

Where the eye mixes nah and nai

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

3 ch
nah
3 ch
nai

Visual trap between nah and nai

These two trip readers on the page rather than in the ear: nah is [naː] while nai is [ˈna̠j]. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - h in “nah” becomes i in “nai”, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 58144, derived from the frequency rank of both members and their visual similarity.

nah is recorded at frequency rank #14,411, classified as anadj, pronounced [naː]. nai is at rank #43,733, tagged as anoun, pronounced [ˈna̠j].

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 58144, this pair ranks #67,601 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of nah vs nai

Shared letters: an. Private to "nah": h. Private to "nai": i.

"nah" · 3 letters · shape CVC  ·  "nai" · 3 letters · shape CVV

Frequently Asked Questions

Can "nah" and "nai" be used interchangeably?
No - they are not even the same part of speech. "nah" is an adjective and "nai" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "nah" or "nai"?
"nah" is the more common of the two: it sits at frequency rank #14,411 in our Spanish list, against #43,733 for "nai". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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 "nah" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "nai" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #67,601 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "nah" and "nai" also get mixed up with nearby pairs, the highest-scored neighbour is "nai vs nox". Nearby pair

Confusion rank #67,601 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list