A course In Modern English Lexicology

§ 21. Causes of Semantic
Chang may be roughly subdivided into two groups: a) extra-linguistic and b) linguistic causes.
By extra-linguistic causes we mean various changes in the life of the speech community, changes in economic and social structure, changes in ideas, scientific concepts, way of life and other spheres of human activities as reflected in word meanings. Although objects, institutions, concepts, etc. change in the course of time in many cases the soundform of the words which denote them is retained but the meaning of the words is changed. The word car, e.g., ultimately goes back to Latin carrus which meant ‘a four-wheeled wagon’ (ME. carre) but now that other means of transport are used it denotes ‘a motor-car’, ‘a railway carriage’ (in the USA), ‘that portion of an airship, or balloon which is intended to carry personnel, cargo or equipment’.
Some changes of meaning are due to what may be described as purely linguistic causes, i.e. factors acting within the language system. The commonest form which this influence takes is the so-called ellipsis. In a phrase made up of two words one of these is omitted and its meaning is transferred to its partner. The verb to starve, e.g., in Old English (OE.
steorfan) had the meaning ‘to die’ and was habitually used in collocation with the word hunger (ME. sterven of hunger). Already in the 16th century the verb itself acquired the meaning ‘to die of hunger’. Similar semantic changes may be observed in Modern English when the meaning of one word is transferred to another because they habitually occur together in speech.
Another linguistic cause is discrimination of synonyms which can be illustrated by the semantic development of a number of words. The word land, e.g., in Old English (OE. land) meant both ’solid part of earth’s surface’ and ‘the territory of a nation’. When in the Middle English period the word country (OFr. contree) was borrowed as its synonym, the meaning of the word land was somewhat altered and ‘the territory of a nation’ came to be denoted mainly by the borrowed word country.
Some semantic changes may be accounted for by the influence of a peculiar factor usually referred to as linguistic analogy. It was found out, e.g., that if one of the members of a synonymic set acquires a new meaning other members of this set change their meanings too. It was observed, e.g., that all English adverbs which acquired the meaning ‘rapidly’ (in a certain period of time — before 1300) always develop the meaning ‘immediately’, similarly verbs synonymous with catch, e.g. grasp, get, etc., by semantic extension acquired another meaning — ‘to understand’.1
1 See ‘Semasiology’, § 19, p. 27,
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Generally speaking, a necessary condition of