一いっ夫ぷ一いっ婦ぷ制せいいっぷいっぷせいMeanings1expression, nounmonogamyRefers to the social or legal system of being married to only one person at a time.日本にほんでは一いっ夫ぷ一いっ婦ぷ制せいが法ほう律りつで定