Capriciousness here kind of means like the summer wind is unpredictable. It will blow strong, then not blow at all in an instant.

Whenever you don’t know a word, it’s real easy to remember: dictionary.com. I go there all the time when I don’t know a word in English. Sometimes they give me definitions that I don’t always understand, then I have to look up words in the definition, but eventually I figure it out because it’s so easy to copy and paste the words I don’t know.

Sometimes stripping a word down to its root is more helpful with definitions too. Like the definition for capriciousness is: subject to, led by, or indicative of caprice or whim. Well, that’s kind of confusing. But when I look up the definition of just caprice, I get: a sudden, unpredictable change, as of one’s mind or the weather. Ah! That makes more sense.

Also, don’t worry so much if you can’t figure out a couple words. Even without the word “capriciousness,” you can still understand the poem. That part of the poem says that the summer air is blowing at the tent. You don’t gotta know that it’s a capricious wind. So, don’t stress out so much if you can’t understand a word or two and a dictionary isn’t available.