Challenging Concepts

adjective A word that describes or modifies a noun or pronoun. In this case, 'perplexed' is an adjective that describes someone who is confused or puzzled.

• The professor looked perplexed by the student's question during the lecture.
• I'm completely perplexed by this math problem, can you help me?
• I was so perplexed by the movie's ending, I had to watch it again to understand.
• Her mind was a maze of thoughts, leaving her feeling perplexed and lost.

adjective relating to or constituting a problem; difficult to solve or decide

• The solution to this mathematic problem is quite problematical.
• I'm not sure how to deal with this problematical situation.
• Dealing with this problematical issue is a real headache.
• Navigating through the problematical maze of bureaucracy can be daunting.

adjective a word that describes or gives more information about a noun, in this case 'ununderstandable' describes something that cannot be understood

• The complex scientific theory was ununderstandable to most of the students.
• The instructions were so ununderstandable that we had to ask for help.
• The new math concept is totally ununderstandable to me.
• His emotions were so mixed up and ununderstandable that no one could figure him out.