## Meanings
1. Something that you hear; what is produced by vibrations and heard by the ear.
2. Sensible, reliable, and likely to be correct.
3. In good condition; healthy and not damaged.
4. Safe and secure, especially financially.

## Examples
- We strained to hear the faint sound of the owl's wings.
- She gave me some sound advice about choosing a career.
- The old bridge is still structurally sound.
- They made several sound investments over the years.

## Synonyms
- echo
- noise
- reecho
- resonate

## Antonyms
- quiet
- silence
- stillness

## Derived Forms
- aftersound
- foresound
- hypersound
- infrasound
- microsound
- missound
- nonsound
- outsound
- re-sound
- somatosound
- sound-alike
- sound-on-film

## Related Forms
- audible
- listen
- utter

## Roots and Affixes
- Root: sownde
- Root: sun
- Root: son
- Root: sonus
- Root: *swenh₂-
- Root: sownden
- Root: suner
- Root: soner
- Root: sonō

## Etymology
* Noun: from Middle English sownde, alteration of soun, borrowed from Anglo-Norman sun, soun, Old French son, from accusative of Latin sonus, ultimately from Proto-Indo-European *swenh₂- (“to sound, resound”). * Verb: from Middle English sownden, sounen, borrowed from Anglo-Norman suner, sounder, Old French soner (modern sonner), from Latin sonō. * The hypercorrect -d appears in the fifteenth century. (Compare dialectal drownd, gownd for the same development.) Displaced native Middle English swei, from Old English swēġ, from Proto-Germanic *swōgiz.

## AI Etymology
The noun sound is from Middle English sownde, alteration of soun, borrowed from Anglo-Norman sun, soun, Old French son, from accusative of Latin sonus, ultimately from Proto-Indo-European *swenh₂- (“to sound, resound”).; Verb: from Middle English sownden, sounen, borrowed from Anglo-Norman suner, sounder, Old French soner (modern sonner), from Latin sonō.; The hypercorrect -d appears in the fifteenth century. (Compare dialectal drownd, gownd for the same development.) Displaced native Middle English swei, from Old English swēġ, from Proto-Germanic *swōgiz. Important forms in the word's history include Middle English sownde, xno sun, Old French son, Latin sonus, Proto-Indo-European *swenh₂-, Middle English sownden, xno suner, and related intermediate forms. In current use it includes senses such as Something that you hear; what is produced by vibrations and heard by the ear and Sensible, reliable, and likely to be correct.

## Topics
- Senses & Perception

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