Generally, it is legal to take a word finder help you find words. These tools are simply software programs or websites that rearrange letters or combine them in different ways to find words that match certain criteria. There is nothing inherently illegal about using these tools, as long as they are used in a way that is not fraudulent or deceptive.
However, it is important to note that some word games or competitions may have rules that prohibit the use of word finder tools or other types of cheating. If you are participating in a word game or competition, you should check the rules to see if the use of word finder tools is allowed.