SAT TOEFL IELTS ludicrous Definition Ludicrous means so absurd or ridiculous that it is amusing. Example "It’s ludicrous to think that penguins can fly." Sign in to save SAT PDF — $25 TOEFL PDF — $25 IELTS PDF — $25 ← lucrative lugubrious → Study tips featuring "ludicrous" TOEFL Academic Vocabulary: Study by Topic How Context Clues Save You on the SAT Boost Your IELTS Writing With Precise Vocabulary Related words SAT antonym SAT abase SAT abdicate SAT abdomen SAT abduction SAT abet SAT abeyance SAT abject SAT abjure SAT ablution SAT abnegate SAT abnormal