I'mvsirmãWhat's the difference?

Quick tell: I'm is a contraction, irmã is a noun, so they fill different roles in a sentence.

Which to use

“I'm” is a contraction and “irmã” is a noun - they look or sound alike but fill different roles in a sentence.

#3,410
“I'm” frequency rank
#939
“irmã” frequency rank
4349
confusion score

Side-by-Side Comparison

Feature I'm irmã
Definition contração de I am (eu sou; eu estou) aquela que em relação a outrem, possui os dois pais (o mesmo pai e a mesma mãe ao mesmo tempo) em comum

Where the spellings diverge

Shared letters are muted; the letters that actually set I'm and irmã apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

3 ch
I'm
4 ch
irmã

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: I'm is /aɪm/ while irmã is /iɾ.ˈmɐ̃/. 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 (contraction vs noun), which is usually the fastest check. Our composite confusion score for this pair is 4349, derived from the frequency rank of both members and their visual similarity.

I'm is recorded at frequency rank #3,410, classified as acontraction, pronounced /aɪm/. irmã is at rank #939, tagged as anoun, pronounced /iɾ.ˈmɐ̃/.

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 4349, this pair ranks #70,595 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of I'm vs irmã

Shared letters: im. Private to "I'm": -. Private to "irmã": .

"I'm" · 2 letters · shape VC  ·  "irmã" · 4 letters · shape VCCV

Frequency comparison

I'm#3,410
irmã#939

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "I'm" and "irmã" be used interchangeably?
No - they are not even the same part of speech. "I'm" is a contraction and "irmã" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "I'm" or "irmã"?
"irmã" is the more common of the two: it sits at frequency rank #939 in our Portuguese list, against #3,410 for "I'm". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering I'm vs irmã

The fastest way to pick the right one every time.

  • Check the role first: if you need a contraction, it's “I'm”; for a noun, it's “irmã”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “I'm” entry
  • Browse more pairs most likely to be confused. Most confusable

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

Source: FrequencyWords open word-frequency list