愁

to worry about

heart / mind / intention / center / core / CL:顆|颗[ke1],個|个[ge4]

autumn / fall / harvest time

old variant of 秋[qiu1]

see 鞦韆|秋千[qiu1 qian1]

to be worried

to worry / to fret / to be anxious / to become sad

with a worried frown

to worry / to be anxious

homesickness / nostalgia

sorrow; sadness / distressed; sorrowful

melancholy

hundred knots of worry in one's intestines (idiom); weighed down with anxiety

anxiety / distress

depressed / gloomy

melancholy

(last line of the poem 聲聲慢|声声慢[Sheng1 sheng1 Man4] by Song poet Li Qingzhao 李清照[Li3 Qing1 zhao4]) / how can it be expressed in one word, "sorrow"? / how can words express such sadness?

melancholy and moody (idiom); depressed personality

to drown one's sorrows (in alcohol)