In Gender classifications M=male, F=female, what gender is "U"?

Question

In Gender classifications M=male, F=female, what gender is "U"?

Answer 1

Unisex, Unknown, Undetermined, Unidentified, Unimportant, Unclassified, Unrealistic, Unthinkable, Unmistakable, Un-dressible, Unreliable, Underwear...

Answer 2

Undetermined? Unknown?

Answer 3

Undecided which I think would mean androgynous.

Answer 4

If it's clothing we're talking about, it could be "Unisex" clothing.

I do staffing and hiring, and when an applicant applies online but doesn't want us to know if he/she is a man/woman, they will leave the gender question blank. Our records then say "Unknown".

If it's a survey, and the s*x hasn't been checked, the s*x will be filed as "Unknown/undetermined".

I don't know what else it could be :)

Answer 5

I think is may be "undefined" or "unknown".  Perhaps in the case of Hermaphrodites.

Answer 6

For s*x classifications, it probably means "s*x Unknown". We use it in genealogy research quite frequently.

Best wishes. ☺