Word used by 'alternative' types to further shield themselves from the forbidden mainstream and put more barriers between themselves and the rest of the world.
Initially developed out of spite due to the likely verbal and physical attacks from 'chavs' or inebriated followers of mainstream activity, the term now seems to be applied with a sense of pride, to the extent of labelling and in some cases returning the verbal and physical abuse to the supposed 'trendy'.
The obvious irony in this statement is that, as is aforementioned, a select niche of society (namely, the alternative society)use this phrase almost exclusively (at least in this context) and yet they use it to somehow proclaim their individuality.
The truth, it would seem, is that it is an excuse. A way of excusing the fact that the populous don't like the way you look and the way you dress. They have their own reasons i'm sure, some well-founded, some slightly bigotted but still individual reasons that aren't incited by the media (no 'freak-bashing' music videos on MTV for example, or articles about how wrong dyeing your hair blue in the National Press). Due to this seemingly unanimous disapproval, this term is used to imply that the offending party doesn't like them because they are a trendy, and the accusing party is so out-there and hip and open-minded that the spoon-fed, publicised masses simply couldn't understand.
An element of denial is involed as well, the subculture referred to earlier has been created out of a need ot be accepted. The majority of the users of this term have not been accepted generally by their peers and seek others to share this feeling. The numbers rise and rise and before you know it, we have a group large enough to huddle together in there issues with other people and shield themselves from it with boundaries, borders, narrow-mindedness and phrases such as this.
They believe that they are doing what they do becuase they don't like what has been 'dealt' to them and are un-impressed with their peers, their government and their country in general, but that is a fantasy (too much Bad Religion can go to your head ;)). It is largely due to the fact that their extreme sense of dress WILL be accepted by a much smaller section of society, and therefore they can join the huddle. Rather like penguins.
In short, if you call someone a trendy and mean half of the emotive and spiteful definitions listed here, chances are you deserve to be treated with the same narrow-mindedness that you treat the rest of the world with.

A trendy is a social categorisation of person who follows modern fashion and listens to mainstream music, having no music genre in particular they follow. The common belief held by many alternatives that trendies lack 'individuality' is incorrect, and can also be applied to other social groups concerning their own appearence. Quite hypocritical really.

Typical trendy guys dress in denim, commonly wearing tight jeans. The jeans are usually long enough to overflow over a trendy's well-maintained trainers, just over the trainer's tongue. They usually wear short sleeve t-shirts of top names such as FCUK, and may wear a jacket (commonly denim). Trendy guys' hair are styled with gel, and they commonly decorate themselves with moderate amounts of jewerery (not too much bling).

Trendy girls are easier to recognise. They are 'shopaholics', and therefore wear the lastest top fashion clothes. They are notoriously known for tight-fitting jeans bearing words such as 'hooch' or 'angel' at the rear. Belly buttons are exposed in fine weather (usually pierced) by their wearing of small tops. Hair styles range (and change) from different styles, but are always kept feminine. Make-up is usually worn in vast amounts, particuarly eye shadow and blusher. Fake tan is also popular.

The view shared by other groups is that trendies are simply 'wannabe townies

A scourge which is arriving, in Britain anyway, not sure about other places...

Trendies are, on the surface, the "cool" people in their 20's, your stereotypical student, clean, almost "grown up" looking youths.

However in reality most are incredibly conceited, IMMATURE, arrogant, personality devoid, and nasty people, who are ridiculously cold to "ousiders".

With music and fashion they are infinitely malleable. They positively lap up the music MTV and NME Magazine dictates to them to like, however unlike the mallcore crowd, they do this activity shamelessly, and in the case of fashion, they wear what ghastly womens magazines/"lads mags" say is "hot" or simply what celebs (celebrities) like to wear, the latter are worshipped, especially if they tie-in with sport or the most popular television shows, the trendy will regurgitate the stupidest catchphrase from the stupidest show ad nauseum, until it's uncool to do so of course...

Quite possibly the most narrow minded group of people, and absolutely adamant about not letting others into their circles of friends, they'd rather be seen dead than seen being friends with someone with an "uncool" haircut, unless you match them exactly, trying to start a convo with one will be met with silence, blatent ignoring. This is contrasting to...

A word that's used to describe something (mainly fashion and music) that is "hip" and "cool". Many times MTV uses this word to hide the fact that they are secretly trying to turn it's viewers into drones who look exactly alike, and like the same music.

-Power in Numbers-once people start seeing it, it becomes more wearable to a mainstream audience but then on the reverse, as weird goth people start seeing it on more people, it becomes a ‘conformism’ and they start chasing new extreme fashions (mainly from America, and odd European Countries and their old fashions i.e Leather boots and cast iron objects) and the first fashion continues to become more and more mainstream through the mcjb theory consisting of 3 parts:

1. Models start wearing them but still to extreme to main audience

2.‘Out there soft core punk chicks’ who have normal boyfriends who just like a little bit of ‘punk’ in their worthless lives (cough Good Charlotte) begin wearing these clothes they have seen on ‘kerazy’ fashion shows and magazines.

3.Due to the punk chicks getting ‘hot’ boyfriends because of this ‘spunk’ the normal girls start to wear these clothes based on jealousy, hereby displaying an increasing power of numbers theory (An item becomes more accepted and less “trendy” as more people start wearing it, as the numbers wearing the product increases, its trendiness somewhat decreases).

-Conclusion: In conclusion a ‘trendy’ object starts out being weird until it is picked up by a fashionable source consisting of models, stars and fashion labels further endorsing the product that is ‘trendy’ into the mainstream.

adj. Following the crowd, just like a mindless sheep.

noun. A mindless sheep who follows the crowd. Never, ever thinks. Never strives to be a unique individual. Someone who is not a leader, but a follower.

Someone who wears fashionable clothing and sometimes follows a croud to fit in. They are not chavs or punk or emos. They are fashionables. They were different clothing but not unique.

A sheep. A person without any self-identification or thoughts of her own. A person who does what the crowd is doing, out of insecurity and immaturity. A person who looks like everyone else because of an immature fear of being himself.