言之凿凿 yán zhī záo záo

DEFINITIONS

  1. unequivocal; with solid evidence and convincing arguments

CHARACTERS

言 yán
HSK 4
words, speech; speak, say
之 zhī
HSK 4
marks preceding phrase as modifier of following phrase; it, him her, them; go to
凿 záo chisel; bore, pierce
凿 záo chisel; bore, pierce