Japanese edit

Etymology edit

From とんでもない (tondemonai, extraordinary, outrageous, completely unexpected).

Pronunciation edit

Prefix edit

トンデモ (tondemo-

  1. (informal) outrageous, crazy
    トンデモ(けん)(きゅう)
    tondemo-kenkyū
    crazy research
    トンデモ()(ろん)
    tondemo-riron
    ridiculous theory