What is a Modifier in English Grammar?

A modifier is a type of word.  It is usually an adjective or adverb used in a way that restricts or adds meaning to a noun.

Here is a website that I read to build an understanding of what a modifier is.  This website also provided a few examples of modifiers in sentences.
http://www.chompchomp.com/terms/modifier.htm

Something it stated on this website was that sentences without modifiers would be no fun to read.  My husband and my mother-in-law love to write.  They love to write in creative ways that make everything more interesting or entertaining.  Therefore, I believe having a strong understanding of modifiers can be helpful when trying to write especially if you want others to read it.  It is a lot of fun to read when the writer has made something more interesting by appropriate use of modifiers