# T4

> English word · Noun · IPA /ˌtiːˈfɔː/ · frequency rank #29,116

## Definitions
1. Abbreviation of tetraiodothyronine (“thyroxine”).

## Easily confused with
- **to** (https://plainspell.com/en/vs/t4-vs-to)
- **TV** (https://plainspell.com/en/vs/t4-vs-tv)
- **te** (https://plainspell.com/en/vs/t4-vs-te)
- **TA** (https://plainspell.com/en/vs/t4-vs-ta)
- **TL** (https://plainspell.com/en/vs/t4-vs-tl)
- **TX** (https://plainspell.com/en/vs/t4-vs-tx)
- **TD** (https://plainspell.com/en/vs/t4-vs-td)
- **ti** (https://plainspell.com/en/vs/t4-vs-ti)
- **Tu** (https://plainspell.com/en/vs/t4-vs-tu)
- **Ty** (https://plainspell.com/en/vs/t4-vs-ty)
- **TB** (https://plainspell.com/en/vs/t4-vs-tb)
- **TN** (https://plainspell.com/en/vs/t4-vs-tn)
- **TS** (https://plainspell.com/en/vs/t4-vs-ts)
- **TM** (https://plainspell.com/en/vs/t4-vs-tm)
- **TT** (https://plainspell.com/en/vs/t4-vs-tt)
- **TF** (https://plainspell.com/en/vs/t4-vs-tf)
- **TC** (https://plainspell.com/en/vs/t4-vs-tc)
- **TJ** (https://plainspell.com/en/vs/t4-vs-tj)
- **tp** (https://plainspell.com/en/vs/t4-vs-tp)
- **TG** (https://plainspell.com/en/vs/t4-vs-tg)

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/t4