# umbra

> English word · Noun · IPA /ˈʌmbɹə/ · frequency rank #60,535

## Definitions
1. The fully shaded inner region of a shadow cast by an opaque object.
2. The fully shaded inner region of a shadow cast by an opaque object.
3. The central region of a sunspot.
4. A shadow.
5. An uninvited guest brought along by one who was invited.
6. One of the family Umbridae of mudminnows.
7. One of genus Umbrina of drums (family Sciaenidae).
8. An element of the umbral calculus.

## Etymology
Borrowed from Latin umbra (“shadow”). Doublet of umber.

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