chí dùn
slow in one's reactions
sluggish (in movement or thought)
lǔ dùn
stupid
slow on the uptake
chéng bài lì dùn
succeed or fail, sharp or blunt (idiom); advantages and disadvantages
success and failure
You win some, you lose some.
wán dùn
blunt (instrument)
stupid
thick-headed
wèi jué chí dùn
amblygeustia
loss of food taste
dùn chì wěi yīng
(bird species of China) blunt-winged warbler (Acrocephalus concinens)