Definition:
A metaphor is a linguistic expression — and, more deeply, a cognitive structure — in which a concept from one domain (the source domain) is mapped onto a different concept (the target domain) to illuminate, structure, or express it, based on structural or experiential similarity. “Life is a journey,” “Time is money,” “Argument is war” (“Your claims are indefensible,” “She attacked every weak point in my theory”). In cognitive linguistics, pioneered by Lakoff and Johnson’s Metaphors We Live By (1980), metaphor is not ornamental language but the primary mechanism by which humans conceptualize abstract domains — time, emotion, thought, morality, society — in terms of concrete experiential domains like space, motion, objects, and physical sensation. This insight has significant implications for language learning: much vocabulary — especially abstract vocabulary — is metaphorically structured, and understanding these structures provides a powerful framework for vocabulary acquisition and retention.
Types of Metaphor
Dead metaphors (frozen metaphors): Metaphors so conventionalized they are no longer perceived as figurative — “the foot of the mountain,” “the leg of the table,” “to grasp an idea,” “to see someone’s point.”
Conventional metaphors: Still recognized as figurative but highly entrenched — “his career skyrocketed,” “she was drowning in debt,” “the economy collapsed.”
Creative/novel metaphors: New, non-conventional mappings — literary metaphor; striking precisely because they violate expected patterns.
Extended metaphors: A metaphor systematically elaborated over a sustained passage.
Conceptual Metaphor Theory (Lakoff & Johnson, 1980)
Lakoff and Johnson proposed that metaphorical thought is not confined to language but is a fundamental structure of human cognition. We understand abstract domains by projecting the structure of more concrete source domains:
- TIME IS MONEY: “Spend time,” “waste time,” “invest time,” “time is running out,” “save time” — time is conceptualized as a measurable, transferable resource.
- ARGUMENT IS WAR: “Defend your position,” “attack the argument,” “shoot down the point” — argument is conceptualized in combative terms.
- UNDERSTANDING IS SEEING: “I see what you mean,” “shed light on,” “in the dark about,” “illuminating explanation.”
- LOVE IS A JOURNEY: “We’re at a crossroads,” “their relationship is going nowhere,” “we’ve come a long way.”
These mappings are consistent, systematic, and largely unconscious. They are not just linguistic; they shape how we think about and act within the target domain.
Metaphor and L2 Vocabulary Acquisition
Because so much abstract vocabulary is organized around conceptual metaphors — words related to emotions, mental processes, time, social relationships, argument, and morality — learners who understand the underlying metaphorical structures can:
- Predict the meaning of new vocabulary items within a metaphorical system
- Recognize that idioms and figurative expressions are often instances of systematic metaphorical mappings, not random arbitrary expressions
- Understand and produce more natural figurative language
History
Aristotle: Poetics and Rhetoric — foundational distinction between literal and figurative; metaphor as transference of a name from a different thing.
Lakoff & Johnson (1980): Metaphors We Live By — revolutionary cognitive linguistics argument: metaphor is thought, not just language.
Gibbs (1994): The Poetics of Mind — psycholinguistic evidence for conceptual metaphor processing.
Boers (2000): Applied linguistics research on using conceptual metaphor theory to facilitate L2 vocabulary acquisition.
Practical Application
- Use metaphorical structure as a memory aid — when learning abstract vocabulary, identify the conceptual metaphor it belongs to. “Breakthrough,” “hurdle,” “obstacle,” “pioneer” all map onto the ACHIEVEMENT IS A JOURNEY metaphor — understanding the cluster makes each individual item more memorable.
- Analyze idioms through metaphorical mappings — many idioms that seem arbitrary become transparent when the underlying metaphor is identified (“bite the bullet” ? COURAGE IS ENDURANCE).
Common Misconceptions
“Metaphor is only a literary device used in poetry and creative writing.”
Lakoff and Johnson’s (1980) foundational work demonstrated that metaphor is pervasive in everyday language and thought — expressions like “time is money,” “argument is war,” and “life is a journey” are conventional metaphors that structure how we conceptualize abstract domains. Most language is metaphorical at some level.
“Metaphors are the same across languages.”
Conceptual metaphors vary significantly across languages and cultures. While some metaphors appear universal (HAPPY IS UP), many are culture-specific. L2 learners must acquire the metaphorical mappings of the target language, not just the literal meanings of words.
Criticisms
Conceptual metaphor theory (Lakoff & Johnson, 1980) has been critiqued for being unfalsifiable — critics argue that nearly any expression can be analyzed as metaphorical, making the theory difficult to test. The “invariance principle” and the claim that metaphors are grounded in bodily experience have been challenged by cross-linguistic evidence showing more cultural variation than the embodied cognition account predicts. In SLA, research on L2 metaphoric competence remains underdeveloped compared to other aspects of pragmatic knowledge.
Social Media Sentiment
Metaphor is discussed in language learning communities primarily when learners encounter idioms and figurative expressions that cannot be understood literally. Learners of Japanese frequently discuss culturally-specific metaphors (e.g., stomach-based emotion metaphors vs. heart-based metaphors in English). The concept also surfaces in discussions of advanced reading comprehension and literary analysis.
Last updated: 2026-04
Related Terms
See Also
- Idiom — Many idioms are instances of conceptual metaphors
- Polysemy — Metaphorical extension is a primary mechanism creating polysemy
- Lexical Chunk — Frozen metaphors are often lexicalized as multi-word chunks
- Sakubo
Research
1. Lakoff, G., & Johnson, M. (1980). Metaphors We Live By. University of Chicago Press.
The groundbreaking work establishing conceptual metaphor theory — demonstrates that metaphor is not merely a linguistic decoration but a fundamental cognitive mechanism that structures human thought and language.
2. Littlemore, J. (2001). Metaphoric competence: A language learning strength of students with a holistic cognitive style? TESOL Quarterly, 35(3), 459–491.
Investigates metaphoric competence as a component of L2 communicative competence — finds that the ability to interpret novel metaphors is a distinct skill from general language proficiency.