Which to use
“bf” is a noun and “by” is a preposition - they look or sound alike but fill different roles in a sentence.
- #9,707
- “bf” frequency rank
- #24
- “by” frequency rank
- 9731
- confusion score
Side-by-Side Comparison
| Feature | bf | by |
|---|---|---|
| Definition | Initialism of boyfriend. | Near or next to. |
Letter map: bf vs by
Shared letters muted; letters that set bf and by apart highlighted. Shared run: 1.
Role in the sentence - bf and by
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: bf is anoun and byapreposition. On the page they differ by a single letter - f in “bf” becomes y in “by”. Our composite confusion score for this pair is 9731, derived from the frequency rank of both members and their visual similarity.
bf is recorded at frequency rank #9,707, classified as anoun. by is at rank #24, tagged as aprep, pronounced /baɪ/.
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 9731, this pair ranks #495,891 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of bf vs by
Shared letters: b. Private to "bf": f. Private to "by": y.
"bf" · 2 letters · shape CC · "by" · 2 letters · shape CV
Frequently Asked Questions
Do "bf" and "by" mean the same thing in a sentence?
In ordinary English text, does "bf" or "by" show up more?
Useful next steps
You've compared "bf" and "by". Here's where to go from here.
- Full dictionary entry for "bf" 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 #495,891 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "bf" and "by" also get mixed up with nearby pairs, the highest-scored neighbour is "bf vs BFS". Nearby pair
Confusion rank #495,891 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.