Nature Poet With Some Edge
Usually we're swinging on birches with Frost or traveling down symbolic roads of life. There are often furry creatures around and lots of trees that get us thinking about nature and the ways the natural world reflects our humanity. Rarely, we get instances like what we see in "Neither Out Far Nor In Deep" that are set by the sea and have some more abstract ideas to grapple with.
But more often than not, Frost gives us frank and colloquial language set somewhere in the New England area. He's known for the way his poems mimic common talk, the kind typically heard in New England, and for their ability to evoke big ideas with only a few simple and precise words. In other words, you probably won't need to keep that dictionary handy when tackling a Frost poem. And this one is no exception to that rule.
He's also not your typical modern poet who enjoys experimenting with form and meter. He's pretty traditional and tends to remain true to metrical feet and rhyme, though you'll spot the occasional divergence for sure. You'll often get lots of couplets or alternating rhyme schemes like the one we see in "Neither Out Far Nor In Deep." But in these later poems, we hear more of that abstract, philosophical kind of jive that you don't get so much in his earlier and more popular poems.