The word that means having no form is "amorphous." It is derived from the Greek words "a" (meaning without) and "morphē" (meaning form). To find the meaning of a word, you can use various resources. One option is to consult a dictionary, either in physical or online form. Online dictionaries such as Merriam-Webster or Oxford English Dictionary provide definitions and information on word origins. You can also use search engines to search for the meaning of a specific word, which often lead to dictionary entries or other reputable sources. Additionally, there are language-related websites and forums where you can ask questions and get explanations from experts or fellow language enthusiasts.