1.
If a conclusion or method is ~, it is based on ideas that are wrong.
The thinking is good-hearted, but muddled and fundamentally ~...
The national tests were educationally ~.
? sound
ADJ: usu v-link ADJ
2.
If something or someone is ~, they are unreliable.
No sensible person would put his money in a bank he knew to be ~.
= unreliable
ADJ
3.
If you say that something is ~ in some way, you mean that it is damaging in that way or to the thing mentioned.
The project is environmentally ~...
A diet extremely low in calories can also be a diet that is nutritionally ~.
? sound
ADJ: usu v-link ADJ, usu adv ADJ
4.
If a building or other structure is ~, it is in poor condition and is likely to collapse.
The church was structurally ~.
ADJ: usu v-link ADJ