Ideally, if we weeaboo-fy the word "husband", like we have already done with waifu, this is what we should probably end up with.
It is a term of endearment referring to a male character.
But that is put aside in favor of husbando. A word that when attempted to be pronounced in the same way as waifu, will sound more similar to "Who's Bando?" rather than "Husband".
A Japanese first name, usually for a girl. "Ha" means leaf, and "zuki" means moon. "Tsuki" is the original word for moon, but in this case it becomes "zuki" since it is combined with another word. The word "Hazuki" was used hundreds of years ago, and it meant August. Now, it is used as a name. A girl is usually named Hazuki if she was born in August.
Is a beautiful, radiant, glorious, amazing, magical and brilliant person, the most-perfect-angel and also the best character from Free! (フリー! Furī!). NASA confirmed that if "The sun" was ever a person, it would be Nagisa Hazuki!