Words that begin with the letter "E" include enzyme, elephant, esophagus, eat and extrude. Other words include enumerate, enunciate, eloquent, elongate and elucidate, in addition to etymology and equate.
The website Wordfind.com lists words that begin with "E" organized by the length of the word, from eight letters through two letters. Another excellent word resource is Crosswordsolver.org, a site that both lists "E" words alphabetically, including proper nouns, and also provides links for the definitions and applications of those words. Yourdictionary.com breaks down words that begin with "E" by length and point value in games such as Scrabble and Words with Friends.