(1) His knowledgeability impressed me.

(2) There was great concern in the McCain campaign that Sarah Palin lacked a degree of knowledgeability...

(3) We might marvel at the progress made in every field of study, the methods of testing a person's knowledgeability remain as primitive as ever they were.

(4) Through the study training of 4 many months, my feeling is horizon open, knowledgeability, business is skilled.

(5) A whole host of questions that caused serious problems about her knowledgeability.