méconnaître

Etymology
From.

Verb

 * 1)  to not recognize or be unaware of
 * 2)  to ignore someone by pretending not to know them
 * 3)  Fail to treat someone in the way they deserve; not appreciate a quality, something they merit
 * 1)  Fail to treat someone in the way they deserve; not appreciate a quality, something they merit
 * 1)  Fail to treat someone in the way they deserve; not appreciate a quality, something they merit