民間科學家 [－间－学－]

Jyutping man4 gaan1 fo1 hok6 gaa1
Pinyin mín jiān kē xué jiā

Definitions (Wiktionary)
  1. noun, derogatory, neologism
    “folk scientist”, a person who has minimal formal scientific training and knowledge but is highly enthusiastic about scientific “research” and publicising their pseudoscience theories; crank
    (syn.) 民科