ego vs em, What's the Difference?

Which to use

“ego” is a pronoun and “em” is a preposition - they look or sound alike but fill different roles in a sentence.

#6,872
“ego” frequency rank: #7
“em” frequency rank: 6879
confusion score

Side-by-Side Comparison

Feature	ego	em
Definition	primeira pessoa do singular, eu	exprime a ideia de:

Where the eye mixes ego and em

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

3 ch

ego

2 ch

Why the eye confuses ego with em

These two trip readers on the page rather than in the ear: ego is /ˈe.ɡo/, /ˈe.ɡoː/ while em is /ɐj̃/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (pronoun vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 6879, derived from the frequency rank of both members and their visual similarity.

ego is recorded at frequency rank #6,872, classified as apron, pronounced /ˈe.ɡo/, /ˈe.ɡoː/. em is at rank #7, tagged as aprep, pronounced /ɐj̃/.

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 6879, this pair ranks #67,428 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ego vs em

Shared letters: e. Private to "ego": go. Private to "em": m.

"ego" · 3 letters · shape VCV · "em" · 2 letters · shape VC

Frequently Asked Questions

Can "ego" and "em" be used interchangeably?

No - they are not even the same part of speech. "ego" is a pronoun and "em" a preposition, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "ego" or "em"?

"em" is the more common of the two: it sits at frequency rank #7 in our Portuguese list, against #6,872 for "ego". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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 "ego" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "em" - compare definitions side by side with the headword page. Word entry
This pair ranks #67,428 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"ego" and "em" also get mixed up with nearby pairs, the highest-scored neighbour is "ego vs elio". Nearby pair

Confusion rank #67,428 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.