# greenback

> English word · Noun · frequency rank #48,781

## Definitions
1. Any bill that is legal tender in the US (originally printed with green and black ink) issued by the Federal Reserve.
2. The United States dollar.
3. A unit of American currency issued during the Civil War by the Treasury Department.
4. A wave that has not yet begun to break.

## Etymology
From green + back.

## Easily confused with
- **Greenock** (https://plainspell.com/en/vs/greenback-vs-greenock)

## Common misspellings (14)
`gerenback`, `ggreenback`, `greebnack`, `greenabck`, `greenbacck`, `greenbackk`, `greenbakc`, `greenbback`, `greenbcak`, `greennback`, `grenback`, `greneback`, `grreenback`, `rgeenback`

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