-er is NOT A SUFFIX : danger, river, mother, father, brother, fever, monster, butter, anger, thunder, wonder, timber, hunger, number, copper, ladder, hammer, spider, paper, meter, -er IS a SUFFIX : runner, teacher, writer, driver, smarter, speaker, singer, smaller, helper, stronger , shopper, tidier, wiser, dreamer ,

5.3 er says /er/ Suffix or Not a Suffix? HOZ

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