Look up the root form of the word if you don't find the information you're looking for. For example, if you look up forensics you will find a definition but no etymology. Try forensic for the complete entry.
Also, try removing common prefixes and suffixes and looking up each part separately. For example, antidisestablishmentarianism is not in any of the dictionaries we make available; disestablishmentarian is, as are anti- and -ism.
Don't forget to scroll: When you look up a word at Dictionary.com, you are actually looking it up in several dictionaries at once. If the first definition doesn't make sense in context, see the definitions farther down.
For faster searching:
Use the tab key: In most browsers, hitting tab will put the cursor in the search box; that way you don't have to use the mouse. It will also highlight any text already in the box so that you can begin typing a new word immediately without having to erase the old. Hit tab again to go to the next search box (if any). Note: this works on any Web page with search boxes or other text entry fields, not just on our pages.
Hit return: In most browsers you can just hit the return key instead of clicking on the Search button.
Download CleverKeys: CleverKeys is a free program that allows you to look up words at Dictionary.com and Thesaurus.com (and more) from almost any application, without having to type or copy and paste. To learn more, visit the CleverKeys Web site.