To be cute = 귀엽다 (Revised romanization: gwi-yeop-da) It is an irregular verb. The conjugated form in the present tense is 귀여워 (gwi-yeo-wo) in 반말 (casual language) and 귀여워요 (gwi-yeo-wo-yo) in 존댓말 (formal language). The verb must be the last word in a sentence in Korean. Ex: Oppa is so cute = 오빠는 너무 귀여워(요). (o-ppa-neun neo-mu gwi-yeo-wo-yo) That kitten is so cute = 그 고양이는 너무 귀여워(요). (geu go-yang-i-neun neo-mu gwi-yeo-wo-yo) Babies are usually cute = 아기들은 원래 귀여워(요). (a-gi-deul-eun wol-lae gwi-yeo-wo-yo)