# hypo

> English word · Noun · IPA /ˈhaɪ.pəʊ/ · frequency rank #42,192

## Definitions
1. Melancholy; a fit of hypochondria; a morbid depression.
2. A hypochondriac.
3. Sodium thiosulfate (also called hyposulfite of soda), a photographic fixing agent.
4. A hypoglycaemia attack in a person with diabetes.
5. A hypodermic syringe or injection.
6. Hypothecation.
7. A hypothetical case.
8. A hypomelanistic snake.

## Etymology
Clipping of various terms beginning with hypo-, from Ancient Greek ὑπό (hupó, “under”).

## Easily confused with
- **Hyun** (https://plainspell.com/en/vs/hypo-vs-hyun)
- **ho** (https://plainspell.com/en/vs/ho-vs-hypo)
- **HP** (https://plainspell.com/en/vs/hp-vs-hypo)
- **hip** (https://plainspell.com/en/vs/hip-vs-hypo)
- **hop** (https://plainspell.com/en/vs/hop-vs-hypo)
- **HBO** (https://plainspell.com/en/vs/hbo-vs-hypo)
- **hoo** (https://plainspell.com/en/vs/hoo-vs-hypo)
- **hye** (https://plainspell.com/en/vs/hye-vs-hypo)
- **HPV** (https://plainspell.com/en/vs/hpv-vs-hypo)
- **hap** (https://plainspell.com/en/vs/hap-vs-hypo)
- **hao** (https://plainspell.com/en/vs/hao-vs-hypo)
- **hep** (https://plainspell.com/en/vs/hep-vs-hypo)
- **HPA** (https://plainspell.com/en/vs/hpa-vs-hypo)
- **HMO** (https://plainspell.com/en/vs/hmo-vs-hypo)
- **hope** (https://plainspell.com/en/vs/hope-vs-hypo)
- **hero** (https://plainspell.com/en/vs/hero-vs-hypo)
- **hype** (https://plainspell.com/en/vs/hype-vs-hypo)
- **hips** (https://plainspell.com/en/vs/hips-vs-hypo)
- **Hugo** (https://plainspell.com/en/vs/hugo-vs-hypo)
- **halo** (https://plainspell.com/en/vs/halo-vs-hypo)

## Common misspellings (6)
`hhypo`, `hpyo`, `hyop`, `hyppo`, `hyypo`, `yhpo`

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