sound
Definitions
Vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear.
In good condition; not damaged, injured, or diseased.
Based on reason, sense, or judgment; logical and reliable.
Examples
The sound of the waves crashing against the shore was very relaxing.
That sounds like a wonderful idea for our weekend trip.
The expert gave a sound argument for why the project should be delayed.