The most common Korean word for “middle-aged man” is 아저씨 (ajeossi). 「middle-aged man」는 한국어로 아저씨.
Learn 아저씨 free — flashcards, audio and review →「아저씨」 단어장으로 무료로 외우기Words and levels: TOPIK I essentials (National Institute of Korean Language standard curriculum, KOGL Type 1) · examples: Cheesepotato