Other kids might see a teasible connection to mortician or mortuary. Mortimer is an English family name used a few generations ago as an Anglicization of Moses; it was Walt Disney's original choice for the name of his mouse, until his wife talked him out of it.

The Japanese word for the land of the dead. It's not quite Heaven nor Hell, although it more closely resembles the latter. It's also the name of a video game, which is likely why five baby girls were named Yomi one recent year.