It's not as common but they do say "haa?" (sounding a lot like our "huh?") too. Another very common one besides "e?" is "n?", and also "are?" (more associated w

It's not as common but they do say "haa?" (sounding a lot like our "huh?") too. Another very common one besides "e?" is "n?", and also "are?" (more associated with "what?"). Also eeee? or nnnnn?. Best online japanese-english resource imo: http://eow.alc.co.jp/search?q=huh&ref=sa http://eow.alc.co.jp/search?q=huh&ref=sa