一いち目もく瞭りょう然ぜん

na-adjective, noun which may take the genitive case particle 'no', noun

obvious; clear as day; plain to see

A yojijukugo meaning something is so clear that one glance is enough to understand it. Often used in formal or written contexts.

• 彼かれの嘘うそは一いち目もく瞭りょう然ぜんだった。

  His lie was obvious at a glance.

• 結けっ果かは一いち目もく瞭りょう然ぜんで、議ぎ論ろんの余よ地ちはない。

  The result is clear as day and leaves no room for debate.