adumbrate

You aren't likely to find adumbrate in children's stories or on the sports pages. That's not because this shady word is somehow off-color, but rather because it tends to show up most often in academic or political writing. In fact, some usage commentators find it too hard for "ordinary" use (although they are hard-pressed to define "ordinary"). Art and literary critics have long found it useful, and it's a definite candidate for those oft-published "lists of words you should know" (especially for vocabulary tests). You might remember adumbrate better if you know that it developed from the Latin verb adumbrare, which in turn comes from umbra, the Latin word for "shadow." To adumbrate, then, is to offer a shadowy view of something.