人じん口こう問もん題だいMeaningsNoun1. population problemKanji used人person口mouth問question題topicPitch accentじんこうもんだいComposed of人じん口こうpopulation; common talkNoun問もん題だいquestion (e.g. on a test); problem; problem (e.g. societal, political); question; issue; subject (e.g. of research); case; matter; question (i.e. doubt); public discussion; …NounExamples1我われ々われは世せ界かいの人じん口こう問もん題だいを討とう議ぎした。We debated on the question of world population.