Chincha, aish, aigooooo :D
I tend to use aish a lot.
CHINCHAAAAAAAAAA!? lol! (to the point that even my mom and my dad say that word too)
thank you and bye
Kajima and *sorry not sorry* shibal xDD
daebak, aish, aigooo, chincha !!!
Michiso
and one i learned in Korea you dont see so much in dramas Juggulae
i always say aigoo and omo! But I like the words: jjiang, daebak, aish and YA!
chincha!! There are no word in my native language for chincha but it fits everywhere :)
Jinja (I frequently ask my siblings with this word at home)
Shirou ( I just ove how this is pronounced , Shirhooooo)
Ottoke ( What should I do ? I love this too)
Gwaenchana( I love this after hearing it alot from Gwaenchana;Sarangiya Drama )
-Jungshin charyo (unsure of the spelling). I think it means something along the lines of "Get a hold of yourself"/"Get your act together". 
-Omo & Saesange 

I also generally like historical Korean.
Heol 헐 xD
Eottoke 어떻게
Arasseo 알았어
Jamkkanmanyo 잠깐만요