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8.
A person that is a brilliant friend while things are going well, but when the gong gets tough, the person ups and leaves.
when I was rich, Chris was such a great friend. But when I screwed up and lost everything, I never heard from him again. Chris is such a fair-weather friend.
by Anon. October 23, 2003
 
9.
A friend who only associates with you when they have nothing better to do. Someone who may only stick around in exciting situations but when times are somewhat boring, leave your side.
A fair weather friend would act like they want to hang out but never invite you to do anything and if you invite them to do something they will only do it if they cant find something better.
by carebear bob April 05, 2010
 
10.
Quite simply, a traitor who seems to be your friend when things are going well in your life, but will ditch you the second things start to look bad. Fair-weather friends are often very selfish with sociopathic elements in their personalities, and are usually on the prowl for a poor tool to take advantage of. He/she won't miss an opportunity to use someone to get something. Watch yourself, or you could be the next victim!
Once William lost his job and his house, like a fair-weather friend, Paul was quick to ditch him and look for someone else to mooch from.
by Nimrod_Nineveh April 06, 2010
 
11.
Usually a good friend to begin with that eventually takes advantage of a true friend and does not maintain the SAME loyalty and respect. Without an explation why, a fair weather friend may abandon a friendship altogether for superficial reasons or changes in moral beliefs without a care for nurturing fair dicussion. The exception is when that person needs something, they know they can still count on an "all weather friend"
Since she's a fair-weather FRIEND, I guess that means I'm still her friend in all weather until I consider her not a friend any longer.
by Sean Curto December 18, 2007
 
12.
Someone who poses as a friend when it suits them, but are shady or shonky at other times.
After Mat broke up with my friend, he would act extremely shady all the time, pretending to lose his phone, and pretending not to receive SMS's. At times there was even no toilet paper, or shit on the walls. He is a fairweather friend.
by FWF September 22, 2010
 
13.
someone who only comes around when times are good.
Wow, I thought Steve hated you Dan. I know, so did I. I wonder why he keeps hanging around all of a sudden. It must be because you won the lottery last week. Yeah, he's just a fair-weather friend!
by Chad Courtney October 26, 2003
 
14.
A friend who only wants to hang out when he/she is in a good mood. They say that they'd rather not make their friends unhappy, and use this as an excuse to break off engagements on a moment's notice if his/her mood changes.
I was planning to hang out with Mike today, but he's such a fair weather friend that he called me five minutes before he was supposed to show up and canceled because he said he's feeling down.
by commiebobo November 26, 2009