sound

A long, relatively wide body of water, larger than a strait or a channel, connecting larger bodies of water.

A long, wide ocean inlet.

The swim bladder of a fish.

Free from defect, decay, or damage; in good condition.

Free from disease or injury. synonym: healthy.

Marked by or showing common sense and good judgment; levelheaded.

Based on valid reasoning; having no logical flaws: synonym: valid.

Of or relating to an argument in which all the premises are true and the conclusion follows from the premises.