It's splendid! Here's the definition, courtesy of Wordsmith's A.Word.A.Day:
excursive (ik-SKUR-siv) adjective:My thoughts are excursive. Elsewhere, other definitional sources emphasized the excursional aspects of "excursive" - the going on a trip, making an excursion. And that's what I find intriguing not only in thoughts, but also in writing.
Tending to wander off; rambling.
Other people - I am told - can find it merely annoying; not to the point. (Those are the same people who manage to draw up an outline before the fact, and then write to fill out the outline. I'm always surprised at where I end up. I do outlines at the end, to figure out how I got there. . . . )
By the way, you can subscribe to get a new word every day by email - NY Times called Word.A.Day "The most welcomed, most enduring piece of daily mass e-mail in cyberspace." I've been getting it for years. It's also a major source of the quotations I collect. . . .<
And the painting above, by another way, is by William Bradford, an American painter, 1823-92, who was related to the wife of a rather wealthy man I know, who apparently has several original Bradfords in his home. . . . This is not one of them, but it's one of my favorites of the ones I could find online. Their Bradford - the one I saw, anyway - was more cloud-ey; very somber and ominous. Right up my alley, in other words. I liked it well enough that I managed to remember the name long enough to do some internet research.
And there you have it! Excursive thought and writing. Voilà.