# smooth

> English word · Adjective · IPA /smuːð/ · frequency rank #3,655

## Definitions
1. Having a texture that lacks friction. Not rough.
2. Without difficulty, problems, or unexpected consequences or incidents.
3. Bland; glib.
4. Flowing or uttered without check, obstruction, or hesitation; not harsh; fluent.
5. Suave; sophisticated.
6. Natural; unconstrained.
7. Unbroken.
8. Placid, calm.
9. Lacking projections or indentations; not serrated.
10. Not grainy; having an even texture.
11. Having a pleasantly rounded flavor; neither rough nor astringent.
12. Having derivatives of all finite orders at all points within the function’s domain.
13. That factors completely into small prime numbers.
14. Lacking marked aspiration.
15. Involuntary and non-striated.

## Etymology
From Middle English smothe, smethe, from Old English smēþe, smōþ, both from Proto-West Germanic *smanþī, of unknown origin. Cognate with Scots smuith (“smooth”), Saterland Frisian smoud (“smooth”), Low German smood and smödig (“smooth, malleable, ductile”), Dutch smeuïg (“smooth”) (from earlier smeudig).

## Easily confused with
- **soot** (https://plainspell.com/en/vs/smooth-vs-soot)
- **south** (https://plainspell.com/en/vs/smooth-vs-south)
- **Smyth** (https://plainspell.com/en/vs/smooth-vs-smyth)
- **soothe** (https://plainspell.com/en/vs/smooth-vs-soothe)
- **smoothly** (https://plainspell.com/en/vs/smooth-vs-smoothly)
- **smoothie** (https://plainspell.com/en/vs/smooth-vs-smoothie)
- **smith** (https://plainspell.com/en/vs/smith-vs-smooth)
- **shoot** (https://plainspell.com/en/vs/shoot-vs-smooth)
- **sloth** (https://plainspell.com/en/vs/sloth-vs-smooth)
- **scoot** (https://plainspell.com/en/vs/scoot-vs-smooth)
- **shoots** (https://plainspell.com/en/vs/shoots-vs-smooth)

## Common misspellings (9)
`msooth`, `smmooth`, `smooht`, `smoothh`, `smootth`, `smoth`, `smotoh`, `somoth`, `ssmooth`

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