stingy

"Well, I'm doing my best to grow," said Davy, "but it's a thing you can't hurry much. If Marilla wasn't so stingy with her jam I believe I'd grow a lot faster."

As the moon wheels around Earth every 28 days and shows us a progressively greater and then stingier slice of its sun-lightened face, the distance between the moon and Earth changes, too. At the nearest point along its egg-shaped orbit, its perigee, the moon may be 26,000 miles closer to us than it is at its far point.