I haven't found anything terribly objectionable about the name/nickname Joss. It isn't striking... but it also isn't awful. I prefer it to be a diminutive, and I see it more on a male bearer.
It strikes me as masculine upon first impression. Standard abbreviation for Joseph is Jos, but I suppose it could also be spelled Joss.
― Anonymous User 8/17/2013
3
Could be a nickname for Josephine if you pronounce it with a long O like in ocean... Just a thought :)
― Anonymous User 3/4/2013
1
It's an okay nickname, but a little minimalist to be the official name of a person. It actually sounds quite masculine, so it would be better to name a daughter Jocelyn and call her Joss.