light words with no brightness?

"Why dont you stop using complicated words and start using only simple words. I cant understand them." said she. How could I ever express the perfect pulchritude in choosing the apt words? How could I explain my feelings in a parlance that is alien to me? In my quest for uttering the right words, for selecting the exact set of letters to convey a meaning with a power punch, have I overdone it all and crossed a line where she understands me no more, where my words are merely audible sounds that scream empty sounds devoid of purpose?
"The right word may be effective, but no word was ever as effective as a rightly timed pause" - Mark Twain.