(HIDING NOTHING) [adjective] - showing no kindness or no desire to hide the unpleasant truthAn experienced commentator on political affairs, he was unsparing in his criticism of the government.The documentary went through all the graphic details of the operation in unsparing detail.What impressed me about this biography is its unsparing honesty.
UNSPARING
Meaning of UNSPARING in English
Cambridge English vocab. Кембриджский английский словарь. 2012