Barbarism (noun)

1. An act or manner that is uncivilized or primitive.
2. The use of nonstandard or substandard language.
3. Cruel or brutal behavior.

Origin:

Derived from the greek word 'barbarizein' meaning 'to behave like a barbarian, speak a foreign language'.

Examples:

1. The destruction of the city was seen as a barbarism.
2. His speech was filled with grammatical barbarisms.
3. The tortures inflicted upon the prisoners were considered to be acts of barbarism.
4. Her writing was criticized for its frequent use of barbarisms.
5. The treatment of the animals in the laboratory was deemed a barbarism.