entries → 難題
TSUMUGU · TOCFL 5 (est.) · 詞
難題 word · TOCFL 5 (est.)
難題 =
ㄋㄢˊ ㄊㄧˊ · nántí
noun — a hard problem, a knotty question, a difficult issue

字源 FORM — what the parts do

difficult (困難)nán
problem, topic (標題)
難題,困難的難,標題的題。