Falsetto is when a person tries to talk or sing at a pitch above their range. Here in the US, it’s usually associated with a guy trying to sound like a girl.
So what’s the opposite called, like when a girl tries to lower her voice to sound like a guy?
And yes, I know both men and women can do falsetto (and, theoretically, it’s inverse), but that’s not really relevant to the question (english is a mostly gender-neutral language, thankfully).
Vocal fry, probably.
Yeah, that’s the closest, but I’ve never heard a girl use it to try and sound like a guy. They always just speak low in their range with an almost comically low larynx.]
I’ve actually often wondered why female singers never try to use vocal fry to extend the lower part of their range, even when they are down in the range where it should work. (For instance, my vocal instructor in college could sing an A at the bottom of the bass clef.)
It seems to me that vocal fry has very little power and so wouldn’t be a very useful tool for a singer.
It’s pretty popular in singing.
Brittney used it on Baby One More Time (right at the beginning).
Vocal fry was the first thing that occurred to me as well, but I think that’s more of a symptom of a woman trying to talk low than the goal.
I mean real singing 
Ok I get that it is used in popular music but it still doesn’t seem to be a good way of projecting your voice in a low register.
I never knew that Falsetto wasn’t a real voice (or that ‘voice’ was the word for these things) like soprano or baritone. But when I noticed it had the word false in it I headed over to wiki to see what I could find. The article on singing voices only touches on falsettos, but the falsetto article lists “Creaky Voice” (which is Vocal Fry) in it’s See Also section.
Without digging deeper, that’s probably the best answer you’re going to get.
And while I don’t know enough about singing to discuss it, my gut says that while it might be hard to project you might be able to practice to be able to do it better and with microphones and a PA system it’s clearly possible since several people do it. Besides, with people like Brittney (and Kesha) and to a lesser extent some females that do it just in a normal speaking voice, projection is secondary since the PA system takes care of that, they’re just concerning themselves with the effect.
If you want the voice for singing, it’s probably chest voice. I was once a light soprano, but I can drop a couple of octaves if I go down to my chest.
I don’t agree that falsetto makes a man sound like a woman. There’s a huge difference between, say, a tenor in falsetto and an alto in her chest voice. There are, however, tenors that sing so high, without falsetto, who really do sound like a woman. And then there’s Freddie Mercury, who could sound like just about anyone.
One of my favorite music jokes: What’s the difference between a high tenor and a low alto?
The tenor doesn’t have hair on his back.
Basso profundo, if you are talking about vocal registers.
P
ETA and check for hairs on her chest, Testosterone etc!
Sinceressimo?
Growl
iswydt :d
Clearly its Truthsetto.
YDNSWPravnikDT 
Tuvan throat singing?
Cookie Monstero?
Someone I went to grade school with (in Wisconsin) moved to Russia, learned Russian, married a Russian girl and lived in some kind of hut thing with her and last I heard he was touring with and managing a Tuvan throat singing band. In fact, it’s the band pictured on the wiki page for Tuvan Throat Singing.
It was a bit of a surprise to wonder what he was up to, google his name and come up with this page. If you watch the video, he the guy with the red pony tail. For the record, he’s from the US, whatever he’s speaking there (Russian as far as I can tell, though it could be Tuvan) is a second language.
Here’s the band he’s managing. I think he helped them get a lot of exposure in the states. From what I could gather the last time I read about them, within the their community, I think they’re pretty well known. IIRC they’ve toured with Bela Fleck and the Flecktones.
otteslaf