The antonyms of *alterable* describe things that cannot be changed or modified. *Unchangeable* and *immutable* are similar, but *immutable* implies a more permanent state. *Fixed* refers to something that cannot be moved or changed, while *alterable* refers to something that can be modified. These antonyms can be used in academic, legal, and technical writing to describe unchanging concepts, laws, or fixed parameters.

자연의 법칙은 *변하지 않고* 일정합니다.

自然の法則は*不変*で一定です。

The laws of nature are *unchangeable* and constant.

민주주의의 원칙은 *불변*하며 항상 지켜져야 합니다.

民主主義の原則は*不変*であり、常に支持されるべきです。

The principles of democracy are *immutable* and should be upheld at all times.

제품의 가격은 *고정*이며 협상할 수 없습니다.

製品の価格は*固定*であり、交渉することはできません。

The price of the product is *fixed* and cannot be negotiated.