flagitious fluh-JISH-uhs, adjective:

1. Disgracefully or shamefully criminal; grossly wicked; scandalous; — said of acts, crimes, etc.
2. Guilty of enormous crimes; corrupt; profligate; — said of persons.
3. Characterized by enormous crimes or scandalous vices; as, “flagitious times.”

Flagitious comes from Latin flagitiosus, from flagitium, “a shameful or disgraceful act,” originally, “a burning desire, heat of passion,” from flagitare, “to demand earnestly or hotly,” connected with flagrare, “to blaze, to burn.”

From Dictionary.com.