solecism

a socially awkward or tactless act

Mother Anna was always on guard against any solecism from her children and scolded them immediately if any of them talked out of place in public.

Analogously, in the non-criminal spheres the worst solecism is to be different.

Again, to use our old solecism, that is the lesser part of the truth; the greater part, for men of religion, is that Jesus is of God, that He belongs to Him.

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