The most common Korean word for “last” is 지난 (jinan). There is one more word with a similar meaning — compare them below. 「last」는 한국어로 지난.
last; past
TOPIK 1 · determiner
last; final
TOPIK 2 · noun
Words and levels: TOPIK I essentials (National Institute of Korean Language standard curriculum, KOGL Type 1) · examples: Cheesepotato