出典:Wiktionary
From Medieval Latin sporadicus (whence also French sporadique, Italian sporadico, Spanish esporádico), from Ancient Greek σποραδικός (sporadikós), from σποράς (sporás, “scattered, dispersed”), from σπορά (sporá), σπόρος (spóros, “a sowing [of seed]”).[1]
sporadic (comparative more sporadic, superlative most sporadic)