dim vs doi, What's the Difference?

Which to use

“dim” is an adjective and “doi” is a num - they look or sound alike but fill different roles in a sentence.

#29,687
“dim” frequency rank: #13,272
“doi” frequency rank: 42959
confusion score

Side-by-Side Comparison

Feature	dim	doi
Definition	opaco, escuro, sem brilho ou claridade:	dois; representado pelo algarismo hindu-arábico 2

Where the eye mixes dim and doi

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

3 ch

dim

3 ch

doi

Visual trap between dim and doi

These two trip readers on the page rather than in the ear: dim is /ˈdɪm/ while doi is /doj/. 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 num), which is usually the fastest check. Our composite confusion score for this pair is 42959, derived from the frequency rank of both members and their visual similarity.

dim is recorded at frequency rank #29,687, classified as anadj, pronounced /ˈdɪm/. doi is at rank #13,272, tagged as anum, pronounced /doj/.

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 42959, this pair ranks #22,734 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of dim vs doi

Shared letters: di. Private to "dim": m. Private to "doi": o.

"dim" · 3 letters · shape CVC · "doi" · 3 letters · shape CVV

Frequently Asked Questions

Can "dim" and "doi" be used interchangeably?

No - they are not even the same part of speech. "dim" is an adjective and "doi" a num, so a sentence built for one is usually ungrammatical with the other.

In ordinary Portuguese text, does "dim" or "doi" show up more?

"doi" is the more common of the two: it sits at frequency rank #13,272 in our Portuguese list, against #29,687 for "dim". 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 "dim" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "doi" - compare definitions side by side with the headword page. Word entry
This pair ranks #22,734 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"dim" and "doi" also get mixed up with nearby pairs, the highest-scored neighbour is "dat vs dim". Nearby pair

Confusion rank #22,734 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.