rivulets, gumption, regale.

It's hard to know which of the words in my vocabulary are uncommon, but I'm reading through the story I'm writing for the Steem Fiction Writer anthology organized by @jeezzle, and I thought those three stuck out, at least as not everyday words.

Rivulets, of course, to talk about streams of water that are the width and depth of a single droplet (maybe more than a few droplets, but not as many as you'd find even in a babbling brook)
Gumption, of course, to talk about that sticktoitiveness that comes from stubbornness disguised as courage.
And to regale, or to tell a story with a performative element. Not to act out the story, but to weave the story with such gusto and detail that the audience is swept up in it. Also, because this word looks like "regal", when I use it, I think that the audience is treated to a story that is worth of royalty.

My examples, from the story:

The dark green Kool-Aid dye ran in rivulets down her UCLA sweatshirt.
When she reached the edge of the bridge where he’d been pulled over, though, her gumption failed her.
"I will guide you to your bedchamber and regale you with fascinating stories about my past love life."