in.de.fin.a.bleadj.(形容词)Impossible to define, describe, or analyze.See Synonyms at unspeakable 难下定义、描述或分析的参见 unspeakablen.(名词)One that is indefinable.无法定义的事物【引伸】in.defin.abil.ity 或in.defin.ablenessn.(名词)in.defin.ablyadv.(副词)