A synonym is a word or phrase that means the same as another word or phrase in the same language. A synonym for “not familiar” could be “unfamiliar.” For example, you could say “I’m not familiar with that topic” or “I’m unfamiliar with that topic.” Using synonyms can help to make your writing more varied and interesting.
There are many different ways to find synonyms for a word. You can use a thesaurus, or you can simply search for “synonyms for [word]” in a search engine. There are also many online tools that can help you find synonyms for words.