To obfuscate something means to deliberately make it seem confusing and difficult to understand.
①Macdonald accepted that such information could be used to manipulate, to obfuscate, and to mislead.
②The use of pretentious phrases and complex acronyms is generally designed to obfuscate rather than elucidate.
③He has come across as indecisive or, even worse, he's come across as trying to obfuscate the situation.
befuddle v.使迷惑；使困惑【If something befuddles you, it confuses your mind or thoughts.】
John is very amusing when he is completely befuddled.
[scode type="green"]loom large
If something, especially a problem or worry looms large, it occupies a lot of your thoughts and seems important.
①As such tensions increase, they loom larger in Russia's domestic politics.
②The terrible problem of armed crime now looming large in our society.