bdayvsbrahWhich spelling fits?

Which to use

“bday” and “brah” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#42,020
“bday” frequency rank
#28,849
“brah” frequency rank
70869
confusion score

Side-by-Side Comparison

Feature bday brah
Definition Abbreviation of birthday. Alternative spelling of bra (“brother, friend”).

Letter map: bday vs brah

Shared letters muted; letters that set bday and brah apart highlighted. Shared run: 2. bday (CCVV) and brah (CCVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

4 ch
bday
4 ch
brah

Spelling & dictionary notes on bday vs brah

bday and brah are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 70869, derived from the frequency rank of both members and their visual similarity.

bday is recorded at frequency rank #42,020, classified as anoun, pronounced /ˈbiːdeɪ/. brah is at rank #28,849, tagged as anoun.

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 70869, this pair ranks #48,916 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of bday vs brah

Shared letters: ab. Private to "bday": dy. Private to "brah": hr.

"bday" · 4 letters · shape CCVV  ·  "brah" · 4 letters · shape CCVC

Known mistypes of this pair

  • bday ← bady · bbday · bdayy · bdday · bdya · dbay
  • brah ← barh · bbrah · brahh · brha · brrah · rbah

Frequently Asked Questions

Do "bday" and "brah" mean the same thing in a sentence?
No. They share most of their letters but differ in 2 positions, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
Frequency check: "bday" vs "brah" - which ranks higher?
"brah" is the more common of the two: it sits at frequency rank #28,849 in our English list, against #42,020 for "bday". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

You've compared "bday" and "brah". Here's where to go from here.

  • Full dictionary entry for "bday" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "brah" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #48,916 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "bday" and "brah" also get mixed up with nearby pairs, the highest-scored neighbour is "bday vs bevy". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #48,916 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list