Meaning of the word unsound in English

What does unsound mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

unsound

US /ʌnˈsaʊnd/
UK /ʌnˈsaʊnd/

Adjective

1.

not healthy or in good condition; diseased or rotten

Example:
The old bridge was structurally unsound.
The timber was unsound and had to be replaced.
2.

not based on logic or good sense; fallacious

Example:
His arguments were logically unsound.
The financial plan was considered unsound by experts.
3.

not sleeping deeply or peacefully

Example:
He had an unsound sleep, constantly waking up.
Her mind was unsound due to stress, leading to restless nights.