Sentence:  One part of her audience was totally engaged , the connoisseur witnessing a peculiarly fine performance of some ancient classic , the other part , the guest of the connoisseur , attentive as one who must take an intelligent interest in that which he does not <WSD>fully</WSD> understand . 
Meaning of the word marked with <WSD> tags:  to the greatest degree or extent; completely or entirely; (`full' in this sense is used as a combining form)