Pls do some searches (top right search box) before posting, in this case for: fill in out and you'll find previous threads such as: fill in a form or fill out a form? A c quire and require are very different, study your English-own language dictionary, then come up with more detailed questions.
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Now I don't need the Merriam Webster Dictionary of Synonyms.Maybe not for now, but it's a good idea to have lots of good reference books around just the same!