
I have looked up many hogwarts house trait descriptions and have tried to sum it up in my own words. So here goes...
HUFFLEPUFF!
Hufflepuff traits: Loyalty, dedication, hardworking, fair play and patience.
Hufflepuffs  are frequently looked at as the leftover house, and where this is sort  of true as if you do not fit into any of the others Hufflepuff will take  you, it doesn't mean that you are not important. A lot of people would  not even be able to get into this house because they do not value hard  work or fair play as a decent person should.
This house is seen  as the nicest and more accepting house. You will always feel welcome if  you're in this house and never will you be left out. Once a Hufflepuffs  ties have been made then there is very little that could break it apart.  Once you have made a friends in Hufflepuff you have made a friends for  life as they are not fickle.
Hufflepuffs are seen as a steady,  mellow house that are very accepting of everyone. They are not deceitful  but nature meaning that if they say something is true then it is - they  rarely lie. .
Hufflepuffs, however, can be seen as cowardly as  they are not very confrontational. They may be extroverted and friendly  but if challenged will back down and submit. But if a Hufflepuff is in a  crowd of people the will stick out there opinion till the end so to  back up their comrades. But they do not like being in the limelight and  so tend to follow trends instead of creating new ones.
Hufflepuffs  understand that if you work hard then you will get further and so this  means that if they set their minds to doing something they will stay  with it.
Hufflepuffs have more of a tolerance of different  people and so are most patient when dealing with people with different  views. This patience also applies in their work as they are willing to  put in a lot of hours to accomplish something where as other would give  up after one.
SLYTHERIN!
Slytherin traits:  Traditionalism, Resourcefulness, cunning, ambition, leadership  qualities, self-Preservation, Shrewdness, Determination, certain  disregard for the runs and intelligence.
Slytherin house is known  for producing bad wizards but that doesn't mean that if you are  accepted into this house you will be inherently evil - Ambition is NOT  evil, nor is cunning. Ambition is what gives people drive, which is  essential to advancement.
Slytherins are willing to play for the  other team once in a while if it benefits them. They are not coy about  doing what they need to do to achieve their goals, but sometimes their  ambition can get them so caught up that the do not realize what they're  doing can hurt people. They might often break rules and manipulate  people to get what they need to done.
Slytherins are very good  about getting things done because they have the drive to do so and the  resourcefulness to be able to complete a difficult task. This is why  they are considered good leaders.
They can be more open minded  about certain things but then if it interferes with your day to day  lives you wouldn't hesitate to reject it. They can be judgmental towards  unfamiliar things, which is why they tend to stick with groups they  know.
Slytherins tend to hesitate before acting, so as to weigh  all possible outcomes before deciding exactly what should be done. You  are scared that you will embarrass yourself and so can frequently be on  defense when talking to someone, or even the offensive so to prevent  people from mocking you.
They tend to deal with their problems on  their own rather than expressing their emotions outwardly unless  provoked. They are more distrustful than most and can often be viewed as  cold.
GRYFFINDOR
Gryffindor traits: bravery, stubbornness, rash, daring, out-going, generious, adventureious, charm and chivalry.
Gryffindors  are the 'ideal' house who will put others before themselves and go  beyond the call of duty when need be. The are seen as very brave in the  face of danger but sometimes they can go over the top or make desistions  to rashly causing unneeded conflict.
They are seen to be very  charming and out going towards a range of people but can be very closed  minded to those they think are 'wrong'. If you don't follow there regeim  they could be quite cold and even mean to you. If you get into an  argument with a Gryffindor they are less likely to back down.
But  they are seen as generous to those who arent as socailly adept to them.  If they see someone in the corner of a room, not getting involved, the  are likely to help them along by making introductions. This means that  they can be good leaders as they are aware of the people around them and  give off a warm, inviting atmosphere. Gryffindors tend to be more  trusting of people.
Gryffindors are seen as quite proud of who  they are and so if someone critises there honour they are likely to pick  a fight. They stick up for what they believe in without even slight  waver but this can mean that the bigger picture can be lost to them.
Gryffindors  can often have a certain disreguard for the rules and do what they  think is 'right' dam the consequences. The might often seek out  adventure and are really seen to live life to the full. Gryffindors tend  to live in the 'now' and don't worry about the 'later'.
Gryffindors  in general love being the centre if attention and will often seek it  out. They are very socailly adapt but can also be very in-you-face.
RAVENCLAW
Ravenclaw traits: Cleverness, wit, intelligance, individuality and creativity.
Ravenclaws  are the most open minded of the houses. They like to be in smaller  gatherings of people with the same ability and don't like large  gathering. They are the most introverted house as well and this means  that they can be looked upon as shy.
They can seem very self  obsessed at times but only because they have such an inquisitive mind  that means that once they have started on a project they won't give up  until its done.
Ravenclaws are ambitious but not for personal  gain but for the sake to wanting to know more about the world. The care  little for the material aspects of life and prefer to turn to deeper  matters.
There open-mindedness means that they excel easier in  areas of learning because they don't have stubborn beliefs or principles  that can hold one back from understanding new information's.
On  the other hand Ravenclaws can find social situations very difficult and  can be considered rude when they do not respond to something in specific  way e.g. laugh at a joke. They can be disconnected from the rest of  humanity even though they tend to have a deeper understanding of it then  most.The frequently think outside the box but then this could mean that  people don't understand them.
They are good at giving advice,  have strong empathy and are avid researchers but if taken out of their  comfort zone of books and logic then they can get a bit lost.
.....So  I hope this gives you an insight to the Hogwarts houses! You might not  agree with some of these and that fair enough but, in all, this is how I  see them!