Definition · Plain-language
What is Semantics?
Semantics is the branch of linguistics and logic concerned with meaning. It studies the relationship between signifiers—such as words, phrases, signs, and symbols—and what they stand for, analysing how meaning is constructed, interpreted, and communicated in language.
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Lexical vs. Phrasal Semantics
Semantic study is conducted at different levels of language structure. Lexical semantics focuses on the meaning of individual words and the semantic relationships between them, such as synonymy, antonymy, hyponymy (classification, e.g., 'dog' is a hyponym of 'animal'), and polysemy (words with multiple related meanings). Phrasal (or structural) semantics studies how the meanings of individual words combine syntax rules to form the meaning of larger phrases and sentences.
Denotation, Connotation, and Pragmatics
A critical distinction in semantics is between denotation—the literal, objective definition of a word found in a dictionary—and connotation—the subjective, emotional, or cultural associations that a word carries. Semantics also borders on pragmatics, the study of how context influences interpretation. While semantics focuses on the literal meaning of the words spoken, pragmatics examines the speaker's intended meaning, factoring in tone, situation, and shared knowledge.
Semantic Shift and the Evolution of Language
Language is not static, and the meanings of words change over time through a process called semantic shift. This can occur via narrowing (a word's meaning becomes more specific, e.g., 'starve' once meant 'to die' but now means 'to die of hunger'), broadening (a meaning becomes more general), amelioration (a word acquires a positive association), or pejoration (a word acquires a negative association, e.g., 'silly' once meant 'blessed' or 'happy' but now means 'foolish').
Key facts
At a glance
- Semantics is the scientific study of meaning in language.
- It distinguishes between literal meaning (denotation) and associative meaning (connotation).
- Semantic analysis operates at the word level (lexical) and sentence level (phrasal).
- Context plays a major role in semantic interpretation, bridging into pragmatics.
- Semantic shift refers to the evolution of word meanings over historical periods.
Common misconceptions
What people often get wrong
Often heard: Semantics is just about arguing over trivial word choices.
Actually: While colloquially people say 'that's just semantics' to dismiss minor details, academically it is the fundamental study of how humans communicate and construct meaning.
Often heard: The meaning of a word is permanent and defined solely by its origin.
Actually: Word meanings are dynamic and determined by usage; semantic shifts frequently change what words mean, sometimes to the exact opposite of their original definition.
Often heard: Syntax and semantics are the same thing.
Actually: Syntax deals with grammatical structure and rules, whereas semantics deals with the meaning of the words within those structures. A sentence can be syntactically perfect but semantically nonsensical.
Going deeper
