From a presumed derivative of G3201 and μοῖρα moira (fate; akin to the base of G3313); blaming {fate} that {is} querulous (discontented): - complainer.
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Mar 7:2And when they saw some of his disciples eat bread with defiled, that is to say, with unwashen, hands, they found faultG3201.
Heb 8:8For finding faultG3201 with them, he saith, Behold, the days come, saith the Lord, when I will make a new covenant with the house of Israel and with the house of Judah: