# gibbous

> English word · Adjective · IPA /ˈɡɪbəs/

## Definitions
1. Curved or bulged outward.
2. Having more than half (but not the whole) of its disc illuminated.
3. Humpbacked.

## Etymology
From Middle English gibbous, from Latin gibbus (“humped, hunched”), probably cognate with cubō (“bend oneself, lie down”), Italian gobba (“humpback”), Ancient Greek κῡφός (kūphós, “humpback, bent”), κύβος (kúbos, “cube, vertebra”), Spanish giboso (“humped”). Also ultimately compare dialectal Norwegian keiv (“slanted, wrong”), German schief (“crooked, slanting”) and Dutch scheef (“crooked, slanting”).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/word/gibbous