bem vs by, What's the Difference?

Which to use

“bem” is an adverb and “by” is a preposition - they look or sound alike but fill different roles in a sentence.

#54
“bem” frequency rank: #1,598
“by” frequency rank: 1652
confusion score

Side-by-Side Comparison

Feature	bem	by
Definition	de maneira hábil, segura	por;

Letter map: bem vs by

Shared letters muted; letters that set bem and by apart highlighted. Shared run: 1.

3 ch

bem

2 ch

Role in the sentence - bem and by

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: bem is anadverb and byapreposition. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 1652, derived from the frequency rank of both members and their visual similarity.

bem is recorded at frequency rank #54, classified as anadv, pronounced /ˈbẽĩ̯/. by is at rank #1,598, tagged as aprep.

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 1652, this pair ranks #73,876 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of bem vs by

Shared letters: b. Private to "bem": em. Private to "by": y.

"bem" · 3 letters · shape CVC · "by" · 2 letters · shape CV

Frequently Asked Questions

Do "bem" and "by" mean the same thing in a sentence?

No - they are not even the same part of speech. "bem" is an adverb and "by" a preposition, so a sentence built for one is usually ungrammatical with the other.

In ordinary Portuguese text, does "bem" or "by" show up more?

"bem" is the more common of the two: it sits at frequency rank #54 in our Portuguese list, against #1,598 for "by". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pair "bem" vs "by" is on the table, pick a follow-up below.

Full dictionary entry for "bem" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "by" - compare definitions side by side with the headword page. Word entry
This pair ranks #73,876 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"bem" and "by" also get mixed up with nearby pairs, the highest-scored neighbour is "bué vs by". Nearby pair

Confusion rank #73,876 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.