I know that some bigoted "men's groups" have latched onto this word to have a false equivalency with misogyny. But it's a real word, and I think I used it correctly (hopefully) from the Greek misos (μῖσος 'hatred')+ anēr, andros (ἀνήρ, gen. ἀνδρός 'man'). Earliest usage in print is from 1871.