We cannot exist in a world without words because this is how we communicate. Even the dumb and deaf need to learn words to be able to communicate even if they may not talk like normal people do. All of our sentences are made of words and words make up a conversation.
But there are some people who have an irrational fear of hearing certain words or names and this is called onomatophobia.
Fear of certain words is usually caused by a traumatic experience that has been associated with that particular word. For instance, something as trivial as the word ‘cooking’ can trigger an anxiety reaction in a person who fears cooking, or one who fears fire because they might have gotten burned in the past. Other people who fear words are those who do not know how to read and they find it scary to even open a book or glance at a newspaper.
They would prefer watching TV shows that do not flash words or may prefer to listen to the radio but hearing certain words can also trigger the phobia.
Treatment includes cognitive and behavioral therapy. These people are taught no to react in a certain way to a particular word.