keyvskiaWhat's the difference?

Quick tell: key is a adjective, kia is an adverb, so they fill different roles in a sentence.

Which to use

“key” is an adjective and “kia” is an adverb - they look or sound alike but fill different roles in a sentence.

#10,384
“key” frequency rank
#31,842
“kia” frequency rank
42226
confusion score

Side-by-Side Comparison

Feature key kia
Definition indispensável lá, lá adiante

Where the eye mixes key and kia

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
key
3 ch
kia

Visual trap between key and kia

These two trip readers on the page rather than in the ear: key is /kiː/ while kia is /kiɐ˦/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (adjective vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 42226, derived from the frequency rank of both members and their visual similarity.

key is recorded at frequency rank #10,384, classified as anadj, pronounced /kiː/. kia is at rank #31,842, tagged as anadv, pronounced /kiɐ˦/.

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 42226, this pair ranks #23,586 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of key vs kia

Shared letters: k. Private to "key": ey. Private to "kia": ai.

"key" · 3 letters · shape CVV  ·  "kia" · 3 letters · shape CVV

Frequently Asked Questions

Do "key" and "kia" mean the same thing in a sentence?
No - they are not even the same part of speech. "key" is an adjective and "kia" an adverb, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "key" or "kia" show up more?
"key" is the more common of the two: it sits at frequency rank #10,384 in our Portuguese list, against #31,842 for "kia". 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 "key" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "kia" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #23,586 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "key" and "kia" also get mixed up with nearby pairs, the highest-scored neighbour is "kaka vs kia". Nearby pair

Confusion rank #23,586 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list