# bo

> English word · Interjection · IPA /bəʊ/ · frequency rank #7,100

## Definitions
1. An exclamation used to startle or frighten.

## Etymology
Imitative.

## Easily confused with
- **by** (https://plainspell.com/en/vs/bo-vs-by)
- **BS** (https://plainspell.com/en/vs/bo-vs-bs)
- **br** (https://plainspell.com/en/vs/bo-vs-br)
- **Bt** (https://plainspell.com/en/vs/bo-vs-bt)
- **BP** (https://plainspell.com/en/vs/bo-vs-bp)
- **BW** (https://plainspell.com/en/vs/bo-vs-bw)
- **BX** (https://plainspell.com/en/vs/bo-vs-bx)
- **but** (https://plainspell.com/en/vs/bo-vs-but)
- **buy** (https://plainspell.com/en/vs/bo-vs-buy)
- **boy** (https://plainspell.com/en/vs/bo-vs-boy)
- **box** (https://plainspell.com/en/vs/bo-vs-box)
- **bus** (https://plainspell.com/en/vs/bo-vs-bus)
- **bob** (https://plainspell.com/en/vs/bo-vs-bob)
- **bro** (https://plainspell.com/en/vs/bo-vs-bro)
- **bye** (https://plainspell.com/en/vs/bo-vs-bye)
- **bow** (https://plainspell.com/en/vs/bo-vs-bow)
- **bug** (https://plainspell.com/en/vs/bo-vs-bug)
- **bud** (https://plainspell.com/en/vs/bo-vs-bud)
- **BTW** (https://plainspell.com/en/vs/bo-vs-btw)
- **boo** (https://plainspell.com/en/vs/bo-vs-boo)

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/bo