In Titles: Do Not Capitalize. As you have probably noticed short words, those with less than five letters, are generally lowercase in titles, unless they are the first or last words in a title.Generally, we do not capitalize: 1  Articles: a, an, the. 2  Coordinating Conjunctions: and, but, or, for, nor, etc.s you have probably noticed short words, those with less than five letters, are generally lowercase in titles, unless they are the first or last words in a title. Generally, we do not capitalize: 1  Articles: a, an, the.