You are afraid others don't respect your intelligence. If you don't know much about a subject, take an introductory course. Alternatively, you can ask lots of questions to people with expert knowledge. There's nothing shameful about admitting ignorance. Most people respect those who are eager to learn. Are you dealing with an arrogant know it all? Stop trying to impress this egotist and keep busy with the activities you enjoy. The less you cross paths with this pest, the happier you will be.