Fauve

Concise Oxford English Dictionary © 2008 Oxford University Press:
Fauve /fəʊv/

▶noun a member of a group of early 20th-century French painters who favoured a vivid expressionistic and non-naturalistic use of colour.

– derivatives
fauvism noun,
fauvist noun & adjective.

– origin Fr., lit. ‘wild beast’, with ref. to a remark by the art critic Louis Vauxcelles.