безрассудны, вероломны, нелюбовны, непримиримы, немилостивы.
they have no understanding, no fidelity, no love, no mercy.
foolish, faithless, heartless, ruthless.
without understanding, untrustworthy, unloving, unmerciful;
They refuse to understand, break their promises, are heartless, and have no mercy.
Without understanding, covenantbreakers, without natural affection, implacable, unmerciful:
[o]undiscerning, untrustworthy, unloving, [p]unforgiving, unmerciful;
void of understanding, faithless, without natural affection, unmerciful;