Skin and bones and Unheard of

Skin and bones noun - A person who is unusually thin and scrawny.

Unheard of and skin and bones are semantically related. In some cases you can use "Unheard of" instead an adjective phrase "Skin and bones".

Skin and bones and unheard of are semantically related. Sometimes you can use "Skin and bones" instead an adjective phrase "Unheard of".