Lenition
A sound change that weakens consonants.
Lenition is a sound change in linguistics that alters consonants, making them 'weaker' in some way. The term comes from Latin lēnis 'weak' and means 'softening' or 'weakening'. Lenition can occur both synchronically (within a language at a particular point in time) and diachronically (as a language changes over time).
- field
- Linguistics
- type
- Sound change
- also_known_as
- Weakening, softening
- opposite
- Fortition
- examples
- Tapping in American English, debuccalization in Spanish, consonant mutation in Welsh
Lore & Background
Lenition involves changes in manner of articulation, sometimes accompanied by small changes in place of articulation. There are two main lenition pathways: opening and sonorization. Opening lenition includes shortening of double consonants, affrication, spirantization, debuccalization, and elision. Sonorization involves voicing, approximation, and vocalization. In some cases, lenition may skip one of the sound changes. The change voiceless stop > fricative is more common than the series voiceless stop > affricate > fricative.
Reader's Guide
Lenition is significant because it illustrates how consonants can change over time or in different phonetic environments, affecting the phonological structure of languages. It has been grammaticalized in some languages, such as Welsh, where it becomes a consonant mutation governed by syntax rather than phonology. The opposite of lenition, fortition, is less common but occurs in Breton and Cornish. Understanding lenition helps linguists trace historical sound changes and analyze synchronic variation across dialects and languages.
Did You Know?
- An example of synchronic lenition is tapping in American English, where /t/ in 'wait' becomes [ɾ] in 'waiting'.
- Some varieties of Spanish show debuccalization of /s/ to [h] at the end of a syllable, so 'estamos' is pronounced [ehˈtamoh].
- In Welsh, lenition is grammaticalized: 'cath' (cat) becomes 'y gath' (the cat) after the definite article, but not in the plural.
- L-vocalization is a subtype of sonorization lenition; in French, /al/ became /au/ and later monophthongized to /o/.
Frequently Asked Questions
What is lenition in linguistics?
Lenition is a sound change in which consonants become 'weaker' or softer in their articulation. The word comes from the Latin lēnis ('weak') and is also commonly called weakening or softening.
What is the opposite of lenition?
The opposite process is fortition, in which consonants grow stronger or more emphatic rather than softer. The two sit at opposite ends of the consonant-strength continuum.
Can you give real-world examples of lenition?
Tapping of /t/ and /d/ in casual American English, debuccalization of /b/ and /d/ in Spanish, and the systematic consonant mutation in Welsh are all well-known cases. They show lenition operating across very different language families and phonetic mechanisms.
Does lenition only occur over long historical periods?
Not at all. It can be tracked diachronically as a language shifts across centuries, but it is also observable synchronically in the moment-to-moment speech of a single speaker who naturally softens consonants in connected talk.
Why does lenition matter for understanding phonology?
It reveals that consonant 'strength' is a gradient rather than a set of rigid categories, which helps linguists model how sounds interact in real-time speech. It also provides a window into how entire sound systems reorganize over time.
More in Linguistic Concepts And Phenomena 1-24
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