# -oid

> English word · Suffix · IPA /-ɔɪd/

## Definitions
1. Resembling; having the likeness of (usually including the concept of not being the same despite the likeness, but counterexamples exist).
2. Of, pertaining to, or related to.
3. Added to nouns to create derogatory terms, typically referring to a particular ideology or group of people.
4. Added typically to the name of an algebraic structure, to denote the horizontal categorification of that structure.

## Etymology
Learned borrowing from Latin -oīdēs, from Ancient Greek -ο-ειδής (-o-eidḗs) (the ο being the last vowel of the stem to which the suffix is attached); from εἶδος (eîdos, “form, likeness”).

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