无由

無由
wúyóu
  1. to be unable (to do sth)
  2. no reason to ...
  3. without rhyme or reason

CEDICT

  1. (literary) to have no way of; to not be in a position to
  2. to have no way of; to not be in a position to

Wiktionary

  1. 没有门径、办法。如：「他话中的玄机，我至今仍无由参透。」也作「无从」。
  2. 没有原因、理由。

重編國語辭典

Entry Composition

1 无 wú
  1. not to have
  2. no
  3. none
  4. not
  5. to lack
  6. un-
  7. -less
2 由 yóu
  1. to follow
  2. from
  3. because of; due to
  4. by; via; through
  5. (before a noun and a verb) it is for ... to ...

Related entries

好端端 hǎoduānduān
  1. perfectly all right
  2. without rhyme or reason