Excessive qualification makes you sound hesitant, such as Qualifiers: fairly, rather, somewhat, relatively, and expressions: seems to be, a little, and a certain amount of.

            Qualified: This rather serious breach of etiquette may possibly shake the very foundations of the diplomatic community.

            Concise: This serious breach of etiquette may shake the foundations of the diplomatic community.

** If you need to add emphasis, look for a stronger adjective.

            WEEK: Novak is a very good pianist.

            STRONG: Novak is a virtuoso pianist.