Two of the first line's three key words are the same word read in opposite directions. "Raw, I answer with war": spell *raw* backwards and you get *war*, as if the speaker's wound flips into aggression with no thinking in between. The title, "Reaction," is enacted in miniature. A reaction isn't a decision. It is what happens when something sore is touched. "Raw" suggests skinned and unprotected, and the reply it provokes is wildly out of scale. The speaker doesn't argue or retreat. The answer is "war."
The colon that follows promises an explanation, and what arrives is strange: "another foot coming / for another me." The poem never says whose foot it is, or what it wants. That anonymity is part of the effect. The threat is a footstep, a sound approaching, not a face. The word "another," used twice, turns the single conflict into a series. Each new foot finds a new version of the speaker waiting, so the self seems to be remade for every fight. A reader with an ear for verse might also catch a pun in "foot," which is the name for a unit of metre. The poem is partly about its own pulse, and that reading is only an inference, but the short, uneven lines do keep up a wary, stepping rhythm.
The poem has no rhyme and no regular beat. Its lines run between four and seven syllables, which keeps it clipped and tense. Sound does the binding that rhyme might have done. The *r* and *w* sounds of the opening gather the first line into one hard knot. In the second stanza the *m* sounds run through "my," "match," "mouth," "made" and, one line earlier, "me," so the speaker's own sound threads through the images that follow. The stanza break also teases the grammar. "For another me" has no punctuation after it, so "in the night" can attach to the approaching foot or to what comes next. The danger and the response blur together in the dark.
That response is the second stanza's "private match." The word is a good one because it works in two ways at once. A match is something you strike, so the title's idea of reaction becomes literal: friction, a flare, a small chemical event. A match is also a contest, or an equal opponent. The speaker has found both a flame and a rival to measure the coming foot against, and the adjective "private" keeps the whole struggle inside, where nobody else can see it. After the loud public word "war," the poem turns quiet and secret.
The last image is the most puzzling and the most rewarding: "like a mouth made clean / against tomorrow." A mouth made clean could be rinsed after something foul was said, or emptied of speech altogether, and the flash of a match could plausibly resemble a small bright opening in the dark. The poem doesn't settle which. "Against" also carries two senses. It can mean "in opposition to," as if tomorrow were another enemy, or "in preparation for," the way people save money against a rainy day. Both readings fit. The speaker may be defying the coming day or getting ready for it, and the stillness of the image suggests that the fighting has burned itself into something like composure.
Notice, too, that the second stanza has no main verb. The first stanza acts ("I answer"), while the second only shows, a single long noun phrase held up like the flame itself. The poem moves from reflex to image, from the shout to the hush after it.
The poem's significance lies in how much it holds in six short lines and how little it explains. We never learn what wounded the speaker, which makes the experience easy to recognize: the sleepless sense of being braced for the next blow, and the odd private ritual of finding a way to feel clean before morning. By hinging on a near-mirror of letters and a pun on "match," the poem suggests that rawness and war sit very close together, and that a flame can be a weapon, a comfort, or both.