prefix ·Rare ·Advanced level

Definitions

Prefix

1. 1
   outside; external morpheme
2. 2
   outside; external; extrasolar; beyond the Solar System (our solar system) morpheme

   "exo- + planet → exoplanet"

Synonyms

All synonyms

ectoexout

Antonyms

All antonyms

emenendendo

Etymology

From Ancient Greek ἔξω (éxō, “outer; external”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.