Word

HSK	Not in HSK
FREQUENCY	Unknown

脑洞大开 nǎo dòng dà kāi

DEFINITIONS

imaginative
to have one's mind buzzing with ideas

CHARACTERS

脑 nǎo HSK 1	brain
洞 dòng HSK 5	cave, grotto; ravine; hole
大 dà HSK 1	big, great, vast, large, high
开 kāi HSK 1	open; initiate, begin, start