picaresque
Concise Oxford English Dictionary © 2008 Oxford University Press:
picaresque /ˌpɪkəˈrɛsk/
▶adjective denoting an episodic style of fiction dealing with the adventures of a rough and dishonest but appealing hero.
– origin C19: from Fr., from Sp. picaresco, from pícaro ‘rogue’.
'picaresque' also found in these Oxford entries:

