taivstomWhich spelling fits?

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

Which to use

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

#15,216
“tai” frequency rank
#1,262
“tom” frequency rank
16478
confusion score

Side-by-Side Comparison

Feature tai tom
Definition que pertence ao ramo das línguas tibeto-birmânicas que compreende o tai (tailandês) e o laociano qualquer som, no que se refere à sua amplitude, fonte, potência, etc.:

Where the eye mixes tai and tom

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

3 ch
tai
3 ch
tom

Why the eye confuses tai with tom

These two trip readers on the page rather than in the ear: tai is /ˈtaj/ while tom is /ˈtõ/. 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 noun), which is usually the fastest check. Our composite confusion score for this pair is 16478, derived from the frequency rank of both members and their visual similarity.

tai is recorded at frequency rank #15,216, classified as anadj, pronounced /ˈtaj/. tom is at rank #1,262, tagged as anoun, pronounced /ˈtõ/.

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 16478, this pair ranks #55,035 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of tai vs tom

Shared letters: t. Private to "tai": ai. Private to "tom": mo.

"tai" · 3 letters · shape CVV  ·  "tom" · 3 letters · shape CVC

Frequently Asked Questions

Do "tai" and "tom" mean the same thing in a sentence?
No - they are not even the same part of speech. "tai" is an adjective and "tom" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "tai" or "tom"?
"tom" is the more common of the two: it sits at frequency rank #1,262 in our Portuguese list, against #15,216 for "tai". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

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

  • Full dictionary entry for "tai" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "tom" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #55,035 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "tai" and "tom" also get mixed up with nearby pairs, the highest-scored neighbour is "tai vs til". Nearby pair

Confusion rank #55,035 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