"female" on a form, or to anyone I don't want to explain anything to. I've gotten over the issues I had as a kid with people mistaking me for a guy, so if they do, I won't correct them, though.
"trigender" here, since sometimes I *do* actually feel a bit more female than neither, though if it's skirts and dresses time, I've never gotten over that feeling like crossdressing. I guess it takes more than my mostly androgyne-male brain has got to get past that hump, even when surrounded by other people similarly dressed up. (maybe I'd feel less weird if there were sometimes other guys in dresses wherever I happened to have to wear them, too?)
"transgender" in addition, as the body I was born with and gender I was assigned on my birth certificate do not match the body I want and what's in my head, even if I'm mostly somewhere around the blue line on the male side of the hockey rink of gender and not way back at the goal like most guys with solid male gender identities, even if they do skate around the rest of the ice on occasion.