"Complete contempt" refers to a strong feeling of disrespect, disdain, or scorn towards someone or something. It means having no regard or value for that person or thing. Full definition
This Labour government has shown complete contempt for the rights of the individual. (theguardian.com)
The verdict can only be understood as expressing complete contempt for women, sex workers, or both. (nakedpastor.com)
In rural Australia, acoustical consultants working for the wind industry or other noise polluters are regarded almost universally with complete contempt by those people whose health has been harmed by the noise pollution, regardless of the source of the noise (eg mining, CSG field compressors, gas fired power stations as well as wind turbines). (na-paw.org)