wéi​dú HSK7

all except

唯独 (唯獨) wéi​dú
all except adverb
with the exception of; excluding only the mentioned item

He eats all kinds of fruit, except for durian.

unique adjective
being the only one; singular or unique in nature

Of all the children, he is the only one with relevant work experience.

Frequency

Movie subtitles
1.40 per million appears in 1% of films

Details

HSK 2.0
Level 6
HSK 3.0
Level 7

Sources

Definitions
CC-CEDICT
Frequency data
SUBTLEX-CH