You can use the word great and it wouldn't appear that you are being boastful. You also want to make sure that you explain why you are great.
A boastaful person is someone who brags about something they are good at. People find them annoying and hard to deal with, but usually ignore them..
Selfish Boastful
Something that is different without being offensive. A really good newsworthy item for example.
The abstract noun form of the adjective 'proud' is proudness:"The proudness of the people..."A related abstract noun is pride:"The pride of the people..."
http://thesaurus.reference.com/browse/boastful There are some good entries here, just look at all the h-words.
It describes someone who is inclined to tell you about all the good things he has done, or rather which he says he has done, since boastful people often exaggerate or lie about their accomplishments.
Being good in something is playing a part. When your good at something, it means your actually doing something, for example, good at Baseball, good in a play.
Being good in something is playing a part. When your good at something, it means your actually doing something, for example, good at baseball, good in a play.
To be good at something could be proficient. To be bad at something could, therefore, be deficient. Deficient is an antonym for proficient.
BEING A HORSEBACK RIDER
No, he was a bad king. He was over boastful about everything and ony thought himself was correct.
Being good at something.