Metaphor


In literary use, a metaphor is defined as a direct comparison between two or more seemingly unrelated subjects. In the simplest case, a metaphor takes the form: "The [first subject] is a [second subject]." More generally, a metaphor casts a first subject as being or equal to a second subject in some way. Thus, the first subject can be economically described because implicit and explicit attributes from the second subject are used to enhance the description of the first. Examples of metaphors abound in all types of language and metaphors are at the root of many word meanings.

Some linguists, such as George Lakoff, view metaphor as a concept that is pervasive in our thoughts, not just in language (Metaphors We Live By, 1980, p. 1; More Than Cool Reason, 1989, p. 2). Because metaphors are systematic thought structures in conceptual metaphor theory, they say that metaphor is the interaction between a target domain and a source domain — an interaction of schemas or concepts, rather than an interaction of two words.

Within rhetorical theory, metaphor is generally considered to be a direct equation of terms that is more forceful and assertive than an analogy, although the two types of tropes are highly similar. One distinguishing characteristic is that the assertiveness of a metaphor calls into question the underlying category structure, whereas in a rhetorical analogy the comparative differences between the categories remain salient and acknowledged. Similarly, metaphors can be distinguished from other related rhetorical concepts such as metonymy, synecdoche, simile, allegory and parable.

Etymology

Originally, metaphor was a Greek word meaning "transfer". The Greek etymology is from meta, implying "across," and pherein meaning "to bear, or carry".

In modern Greek, the word metaphor also means transport or transfer. Historically it appears the two terms were used essentially as synonyms.

Metaphor and Simile

Metaphor and simile are two of the best known tropes and are often mentioned together as examples of rhetorical figures. Metaphor and simile are both terms that describe a comparison: the only difference between a metaphor and a simile is that a simile makes the comparison explicit by using "like" or "as." The Columbia Encyclopedia, 6th edition, explains the difference as:

According to this definition, then, "You are my sunshine" is a metaphor whereas "Your eyes are like the sun" is a simile. However, some describe similes as simply a specific type of metaphor (see Joseph Kelly's The Seagull Reader (2005), pages 377–379); in this case, metaphor is the umbrella term for making comparisons between unlike concepts, and simile describes the figure where one makes the comparison explicit.

Usually, similes and metaphors could easily be interchanged. For example remove the word 'like' from William Shakespeare's simile, "Death lies on her, like an untimely frost," and it becomes "Death lies on her, an untimely frost," which retains almost exactly the same meaning.

Despite the similarity of the two figures, the distinction between them is often focused upon when the terms are introduced to students. "Not knowing the difference between a simile and a metaphor" is sometimes used as a euphemism for knowing little about rhetoric or literature, and many lists of literary terms define metaphor as "a comparison not using like or as", showing the emphasis often put on this distinction.

Although in practice their use is often synonymous, in a rigorous sense, their meanings can be understood to be quite different. Whereas simile explicitly describes a comparison, metaphor asserts an identity. A simile always expresses something trivially true (anything can be likened to anything else), whereas a metaphor always expresses something patently false (which the listener must then make sense of). In other words, one could argue that when listening to an active metaphor, the listener always visualizes something false before analyzing the phrase metaphorically. On the other hand, a simile requires a different kind of analysis: the listener is explicitly asked to compare two objects rather than being forced to when confronted with an otherwise nonsensical phrase. In both cases, this analysis depends on the assumption that listeners think of the literal meaning first, which is only guaranteed when a comparison is fresh.

There are cases where the use of a simile rather than a metaphor makes a clear difference in meaning or listener expectation. Using a simile as opposed to a metaphor can clarify an analogy by calling out exactly what is being compared. "He had a posture like a question mark" (Corbett, Classical rhetoric for the modern student (1971), page 479) has one possible interpretation, that the shape of the posture is that of a question mark, whereas "His posture was a question mark" has at least a second interpretation, that the reason for the posture is in question. Using a simile rather than a metaphor can add meaning by calling attention to the process of comparison, as in, "A woman without a man is like a fish without a bicycle." The point is not to compare a person to a fish, but to ask the reader to consider how the woman is like the fish. Similarly, when speakers wish to call attention to a particularly unexpected comparison, they typically use a simile rather than a metaphor, as in the Magnetic Fields line, "When I'm with you, it's like I'm on the moon; I can hardly breathe but I feel lighter." Finally, similes are often more convenient than metaphors when analogizing actions as opposed to things: "Wide sleeves fluttering like wings" (Marcel Proust) does not translate easily from simile to metaphor. A final difference is that in practice, often-used metaphors can "wear away" into dead metaphors as listeners come to learn metaphorical meanings by rote rather than making sense of seemingly nonsensical assertions, whereas a simile, because it explicitly calls attention to the act of comparison, is not as susceptible to the loss of metaphoricity. Thus, although for fresh comparisons metaphors are typically seen as "stronger" than similes, similes can retain their metaphorical nature more consistently than metaphors precisely because they are not likely to be reanalyzed as secondary meanings of words or phrases.

Analysis of metaphor

A metaphor is sometimes talked of in terms of a "tenor" (or "target" word) and "vehicle" (or the "source" meaning). For example, in the metaphor, "All the world's a stage.", the "source" (or "vehicle") is a "stage" and the "target" (or "tenor") is "all the world."

The metaphor is sometimes further analyzed in terms of the ground and the tension. The ground consists of the similarities between the tenor and the vehicle. The tension of the metaphor consists of the dissimilarities between the tenor and the vehicle.

Types of metaphor

Rhetorical theorists and other scholars of language have discussed numerous dimensions of metaphors, though these nomenclatures are by no means universal nor necessarily mutually exclusive:

The category of metaphor can be further considered to contain the following specialized subsets:

Metaphors in literature and language

Metaphor is present in written language back to the earliest surviving writings. From the Epic of Gilgamesh (one of the oldest Sumerian texts): "My friend, the swift mule, fleet wild ass of the mountain, panther of the wilderness, after we joined together and went up into the mountain, fought the Bull of Heaven and killed it, and overwhelmed Humbaba, who lived in the Cedar Forest, now what is this sleep that has seized you?" — (Trans. Kovacs, 1989)

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