sources : 1

• jin-jja 진짜 - really? / truly?
  • i.e. "jinjja sanai" is the Real Man tv show
• sol-jig-hi 솔직히 - honestly (japanese similarity - shoujiki)
• yeon-seub 연습 - practice (japanese similarity - junbi)
• chwi-mi 취미 - hobby (japanese similarity - shuumi)
• yeo-lo-bun 여러분 - everyone! (vocative)
• cheo-neun X 저는X - I am X
• ~ham-ni-da/im-ni-da/da ~합니다/입니다/다 - sorta equivalent of japanese desu/da or verb "to be" in varying degrees of politeness
• man-na-yo 만나요 - meet ; might be "see you" in end of sentence
• ni-ga 니가 - you
• nae-ga 내가 - I (informal)
• jae-ga 재가 - I (formal)
• mi-an-hae 미안해 - sorry
• sa-lang-hae 사랑해 - I love you
• mal-yeog 마력 - charm (I thought it was merogwi but Turns Out Not)
• dae-bak 대박 - exclamation of surprise
• ga-jang 가장 - most/best
• choe-go 최고 - best
• ség-seu 섹스 - sexy
• gwi-yeo-wo 귀여워 - cute
• ha-ji-ma 하지마 - stop!
• a-i-go 아이고 - ayy/eww/ughh or "oh well" generally
• sun-bae 선배 - veteran (i.e. in k-pop or in class)
• hoo-bae 후배 - novice
• hyung 형 - older guy, from perspective of a boy
• o-ppa 오빠 - older guy, from perspective of a girl
• nu-na 누나 - older girl, from perspective of a boy
• un-ni 언니 - younger girl, from perspective of a boy
• dong-seng 동생 - younger boy or girl, from perspective of boys/girls.
• ba-bo 바보 - stupid
• bultaoreune
• bajusseyo
• hana
• dul
• set
• net

tips

• Just remember that if you see two consonants next to each other, check if one of them is nasal. If it is, both of them will have a nasal sound.