Faultfind

Be not always faultfinding, even when your husband should once in a while stay a little too long from home, or commit some other impropriety, according to your standard of moral measures.

We've fault-found enough for one even.

Do not allow any one to enter your congregation who faultfinds the brethren in the publishing-work and insinuates against the ministry; who says, “The work is drifting into a compromise, and The Gospel Trumpet, which once brought us such inspiring messages, has also compromised.” […]

How the little ones and I would do the many chores about the house and make all bright and cheery, hoping to please "Papa," but he had always a grievance, was always faultfinding, and if there could be no possible complaint made about thing at home, […]

He always seemed angry and needlessly rough with his work as he fumed and fault-found.

It is normal for politicians to faultfind each other including character smearing.

The early adopters, chiefly the semiconductor community, used the instruments to check their production processes and to fault-find when things had gone wrong.

No matter what you do, they are prone to fault-find.