譫せん言げん

noun

delirious talk; ravings; nonsense

Refers to incoherent or irrational speech, often associated with fever, illness, or extreme agitation. Can also be used figuratively for absurd or nonsensical talk.

• 高こう熱ねつでせんげんを言いうようになった。

  He started to talk deliriously because of the high fever.

• 彼かれの話はなしはまるでせんげんだ。

  His story is complete nonsense.