Yes! I strongly feel that now one has to be increasingly aware of every word that he or she utters from his or her mouth. It is like shooting a bullet from the gun, which does not come back once it is shot from the gun. Words spoken without thinking can have damaging effect on anybody; who is at the receiving end of those spontaneous verbal volleys.
Just like clothes which reflect a person's status and background; language too is a very important indicator about the person's grooming and the character that he or she may have.That's why it becomes all the more important to choose your words carefully.
A great way of doing it would be to first ascertain the kind of audience you are speaking in front of. Educated and intellectual audiences would definitely not feel comfortable with rustic terms and might get put off by your comments.
Another great way of doing this is, to learn to be a good listener first; a method that i have been using in my communications for a long time now. If you listen to what others are saying first, it would be much easier for you to decide about the kind of communication you need to adopt for that particular discussion.
Jumping early into a discussion and speaking your mouth out might make you feel a bit out of place at times, if the other participants in the group feel offended about some of the comments.
Basically, the idea should be to let everyone speak and have their piece of minds right in front of all. Getting too enforcing about a point and proving your superiority can often result in misunderstandings being generated and the discussions being cut short and soon curtailed to a dead end without any healthy outcome.