Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. A favored female companion or sweetheart.
- n. A female friend.
Wiktionary
- n. A female partner in a romantic relationship.
- n. A female friend.
GNU Webster's 1913
- n. any female friend.
- n. a girl or young woman with whom a man is romantically involved.
WordNet 3.0
- n. a girl or young woman with whom a man is romantically involved
- n. any female friend
Examples
“I mean, really: The second you tell your friends that your live-in girlfriend is a prostitute (20 years your junior) is the moment your friends need to stage an intervention.”
“I've dated a woman for four years, and it comes a point in your life where you decide that the title girlfriend is not really appropriate, you know, and significant other, and all the words that we seem to have these days floating around.”
“And if your girlfriend is anything like mine, she starts crying because she's so scared and she gets mad and storms out of the room and then you don't have sex for a week or so.”
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“Plus if his girlfriend is there then that might be another reason why he would be in Italy when not actually working.”
“Justin and Rebecca: The med student consumed with trying to diagnose his under-the-weather girlfriend is an utterly realistic plot line.”
“When your girlfriend is airlifted away to get tortured, you, as a gamer, trust that you will be able to get to her on foot.”
“The easiest way to do that would be to put someone he knows in danger, for example, his girlfriend is attacked by a supervillain shortly after the hero gains his powers.”
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“Another guest asks Kanye if he knows his girlfriend is a bird.”
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“For you to get where you are today between you and your girlfriend is a remarkable achievement.”
“The Texas cornerback fully understands his gambling ways on the field, accurately assesses the risk-reward factors and does not hesitate when asked if he or his girlfriend is the better athlete.”
Lists
These user-created lists contain the word ‘girlfriend’.
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Words that shouldn't be used on a first date.
probation, trekkie, wart, unemployed, fetish, suspended driver'..., felon, aerophagia, undies, debt collector, girlfriend, boyfriend and 261 more...
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Nicknames you shouldn't give to an axe-wielding...
primrose, snookums, lavender, piglet, rainbow sunshine, kitten, fuzzy, sweetie, wiggles, care bear, love-a-lot, cheery and 84 more...

yarb I find it odd, too. In the UK a woman's femal friends are simply her "friends". Dec 30, 2010
ruzuzu Does it help if there's a space between the words for those times when it's a girl-who's-a-friend or a boy-who's-a-friend? Dec 29, 2010
Prolagus Same for me (I don't find it an ugly word, though).
Also, if a man referred to their male friends as "boyfriends", people would immediately think of something else... Dec 29, 2010
milosrdenstvi It's always really confused me when women refer to other female friends of theirs as "girlfriends". Can't really say why.
Besides all that, this is a rather ugly word. Dec 29, 2010
seanahan My girlfriend she's at the end, she is starting to cry. Oct 21, 2007