定め無い

Etymology
Compound of : literally, “there is no set fate”, and by extension, “changeable”.

Note that this is distinct from the negative form of verb, , although both have the same reading and inflection. Both senses of sadamenai are often written using hiragana for the nai portion. In such cases, the intended sense can be discerned from the context.

Adjective

 * 1) transient, changeable, ephemeral