noun
flexible constitution
A constitution that can be amended through the ordinary legislative process, as opposed to a rigid constitution requiring a special procedure. Technical term in constitutional law.
See also: 硬性憲法
イギリスには軟性憲法があるとよく言われる。
It is often said that the United Kingdom has a flexible constitution.
硬性憲法 is a rigid constitution that requires a special amendment procedure, while 軟性憲法 is a flexible constitution amendable by ordinary legislation.
Compound of 軟性 (flexibility) and 憲法 (constitution). The term is a direct conceptual borrowing from Western constitutional theory.