# Sy

> English word · Noun · IPA /saɪ/ · frequency rank #23,412

## Definitions
1. Abbreviation of Seyfert galaxy, a type of AGN class of active galaxy.

## Easily confused with
- **Syd** (https://plainspell.com/en/vs/sy-vs-syd)
- **syn** (https://plainspell.com/en/vs/sy-vs-syn)
- **sync** (https://plainspell.com/en/vs/sy-vs-sync)
- **s** (https://plainspell.com/en/vs/s-vs-sy)
- **so** (https://plainspell.com/en/vs/so-vs-sy)
- **SA** (https://plainspell.com/en/vs/sa-vs-sy)
- **se** (https://plainspell.com/en/vs/se-vs-sy)
- **SC** (https://plainspell.com/en/vs/sc-vs-sy)
- **SI** (https://plainspell.com/en/vs/si-vs-sy)
- **SS** (https://plainspell.com/en/vs/ss-vs-sy)
- **SP** (https://plainspell.com/en/vs/sp-vs-sy)
- **su** (https://plainspell.com/en/vs/su-vs-sy)
- **SD** (https://plainspell.com/en/vs/sd-vs-sy)
- **sf** (https://plainspell.com/en/vs/sf-vs-sy)
- **sh** (https://plainspell.com/en/vs/sh-vs-sy)
- **SM** (https://plainspell.com/en/vs/sm-vs-sy)
- **SB** (https://plainspell.com/en/vs/sb-vs-sy)
- **SW** (https://plainspell.com/en/vs/sw-vs-sy)
- **SL** (https://plainspell.com/en/vs/sl-vs-sy)
- **SG** (https://plainspell.com/en/vs/sg-vs-sy)

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