Not sound; defective; as unsound timber.

Infirm; sickly; as unsound in health; an unsound constitution.

Not orthodox; defective; as unsound in faith; unsound doctrine.

Not sound in character; not honest; not faithful; not to be trusted; defective; deceitful.

Not true; not solid; not real; not substantial; as unsound pleasures; unsound delights.

Not close; not compact; as unsound cheese.

Not sincere; not faithful; as unsound love.

Not solid; not material.

Erroneous; wrong; deceitful; sophistical; as unsound arguments.

Not strong; as unsound ice.

Not fast; not calm; as unsound sleep.

Not well established; defective; questionable; as unsound credit.