Korean: 3 NHSK word(s): 后顾之忧* 6 hou4 gu4 zhi1 you1fears of trouble in the rear (idiom)/ family worries (obstructing freedom of action)/ worries about the future consequences/ often in negative expressions; meaning "no worries about anything" 忧郁* 6 you1 yu4sullen/ depressed/ melancholy/ dejected 无忧无虑* 6 wu2 you1 wu2 lv4carefree and without worries (idiom) KOREAN6000 word(s): KOREAN 2500 New HSK words): KOREAN Sentence(s):