摸不着头脑 mō bu zháo tóu nǎo

DEFINITIONS

  1. to be unable to make any sense of the matter
  2. to be at a loss

CHARACTERS

摸 mō
HSK 5
gently touch with hand; caress
不 bu
HSK 1
no, not; un-; negative prefix
着 zháo
HSK 2
make move, take action
头 tóu
HSK 3
head; top; chief, first; boss
脑 nǎo
HSK 1
brain