無微不至 wú wēi bù zhì

DEFINITIONS

  1. in every possible way (idiom); meticulous

CHARACTERS

無 wú negative, no, not; lack, have no
微 wēi
HSK 4
small, prefix micro-, trifling
不 bù
HSK 1
no, not; un-; negative prefix
至 zhì
HSK 4
reach, arrive; extremely, very