怎一個愁字了得 [--个----]

Jyutping
Pinyin zěn yī gè chóu zì liǎo dé

Definitions (CC-CEDICT)
  1. (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])
  2. how can it be expressed in one word, "sorrow"?
  3. how can words express such sadness?