Fibres which are weak or tender in tensile strength.

in deplorable condition; "a street of bedraggled tenements"; "a broken-down fence"; "a ramshackle old pier"; "a tumble-down shack"

Wool with a tensile weakness. Incorporates both tender and broken wool.

Not sound; not whole; not solid; defective; infirm; diseased.

an argument is deductively unsound when it is either: valid, but has at least one false premise, invalid, but all its premises are true, or invalid, and has at least one false premise

not sound financially; "unsound banking practices"

A dog incapable of performing the functions for which it was bred.

a dog with one or more severe conformational or health faults that would render it incapable of working

A term used to describe a failed stratagem or tactic.

Description applied to materials or systems that failed to provide properties suitable for their intended use.

suffering from severe mental illness; "of unsound mind"

Suffering from physical ailments.

Unsound is a series of compilation albums released by the record label Epitaph Records starting in 2006.

A term used to refer to a horse that is not healthy

A horse with health problems or lameness.

of e.g. advice

physically unsound or diseased; "has a bad back"; "a bad heart"; "bad teeth"; "an unsound limb"; "unsound teeth"

not in good condition; damaged or decayed; "an unsound foundation"