unobservable

a. 难以察觉的；注意不到的；不可见的

词形变化

unobservables 复数 unobservables

释义与例句

n.
  1. 1.

    Something that cannot be observed.

adj.
  1. 1.

    That cannot be observed.

词汇关系

形容词

近义相关 2

imperceptible unperceivable

词源

From un- + observable.

来源：wiktionary