Grassmann's Law
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Grassmann's Law

Grassmann's law, named after its discoverer Hermann Grassmann, is a dissimilatory phonological process in Ancient Greek and Sanskrit which states that if an aspirated consonant is followed by another aspirated consonant in the next syllable, the first one loses the aspiration. The descriptive version was given for Sanskrit by Pini.

Here are some examples in Greek of the effects of Grassmann's law:

  • /t?ú-?:/ 'I sacrifice (an animal)'
  • /e-tú-t??:/ 'it was sacrificed'
  • /t?k-s/ ? 'hair'
  • /tk?-es/ 'hairs'
  • /t?ápt-ein/ ? 'to bury (present)'
  • /táp?-os/ 'a grave'

In reduplication, which forms the perfect tense in both Greek and Sanskrit, if the initial consonant is aspirated, the prepended consonant is unaspirated by Grassmann's law. For instance /p?u-?:/ 'I grow' : /pe-p?u:-ka/ 'I have grown'.

The fact that deaspiration in Greek took place after the change of Proto-Indo-European *b?, *d?, *g? to /p?, t?, k?/ and the fact that all other Indo-European languages do not apply Grassmann's law both suggest that it was developed separately in Greek and Sanskrit (although quite possibly by areal influence spread across a then-contiguous Graeco-Aryan-speaking area) and so it was not inherited from Proto-Indo-European.[1]

Also, Grassmann's law in Greek also affects the aspirate /h-/ < *s- developed specifically in Greek but not in Sanskrit or most other Indo-European. (For example, *ség > *hek > k??:/ "I have", with dissimilation of *h...k?, but the future tense *ség?-s? > /hék-s?:/ "I will have" was unaffected, as aspiration was lost before /s/.) The evidence from other languages is not strictly negative: many branches, including Sanskrit's closest relative, Iranian, merge the Proto-Indo-European voiced aspirated and unaspirated stops and so it is not possible to tell if Grassmann's law ever operated in them.

In Greek

In Koine Greek, in cases other than reduplication, alternations involving labials and velars have been completely levelled, and Grassmann's law remains in effect only for the alternation between /t/ and /t?/, as in the last two examples above. (It makes no difference whether the /t?/ in question continues Proto-Indo-European *d? or *.)

Thus, alongside the pair /tak?ús/ 'fast' : /t?áss?:n/ 'faster', displaying Grassmann's law, Greek has the pair /pak?ús/ 'thick' : /páss?:n/ 'thicker' from the Proto-Indo-European etymon *b?n- (established by cognate forms like Sanskrit /bahú-/ 'abundant' since *b? is the only point of intersection between Greek /p/ and Sanskrit /b/) in which the /p/ in the comparative is a result of levelling. Similarly, /pt?omai/ ~ ? /punt?ánomai/ 'come to know' from PIE *b?ewd?- has the future /peúsomai/. However, only /t?/ dissimilates before aspirated affixes like the aorist passive in /-t:/ and the imperative in /-t?i/; /p?/ and /k?/ do not, as in ? /p?át?i/ 'speak!'.

Diaspirate roots

Cases like /t?rík-s/ ~ /trík?-es/ and /t?áp-sai/ ~ /tap?-eîn/ illustrate the phenomenon of diaspirate roots for which two different analyses have been given.

In one account, the underlying diaspirate theory, the underlying roots are taken to be /t?rik?/ and /t?ap?/. When an /s/, a word edge, or various other sounds immediately follows, the second aspiration is lost, and the first aspirate therefore survives (/t?rík-s/, /t?áp-sai/). If a vowel follows the second aspirate, the second aspirate survives unaltered, and the first aspiration is thus lost by Grassmann's law (/trík?-es/, /táp?-os/).

A different analytical approach was taken by the Indian grammarians. They took the roots to be underlying /trik?/ and /tap?/. The roots persist unaltered in /trík?-es/ and /tap?-eîn/. If an /s/ follows, it triggers an aspiration throwback and the aspiration migrates leftward, docking onto the initial consonant (/t?rík-s/, /t?áp-sai/).

In his initial formulation of the law, Grassmann briefly referred to aspiration throwback to explain the seemingly aberrant forms. However, the consensus among contemporary historical linguists is that the former explanation (underlying representation) is the correct one, as aspiration throwback would require multiple root shapes for the same basic root in different languages whenever an aspirate follows in the next syllable (*d for Sanskrit, *t for Greek, *d? for Proto-Germanic and Proto-Italic which have no dissimilation), but the underlying diaspirate allows for a single root shape, with *d? for all languages.

In the later course of Sanskrit, under the influence of the grammarians, aspiration throwback was applied to original mono-aspirate roots by analogy. Thus, from the verb root /?a:h-/ ('to plunge'), the desiderative stem /d?i-a:k?a-/ is formed by analogy with the forms /bu-b?utsa:-/ (a desiderative form) and /b?ut-/ (a nominal form, both from the root /bud?-/ 'to be awake', originally Proto-Indo-European *b?ud?-).

The linguist Ivan Sag has pointed out an advantage of the ancient Indian theory: it explains why there are no patterns like hypothetical */trík-s/ ~ */trík?-es/, which are not ruled out by the underlying diaspirate theory. However, aspiration fails to account for reduplication patterns in roots with initial aspirates, such as Greek /tí-t:mi/ 'I put', with an unaspirated reduplicated consonant. Aspiration throwback thus needs to be enhanced with a stipulation that aspirates reduplicate as their unaspirated counterparts. From a diachronic standpoint, the absence of these patterns in Greek is explained by the Proto-Indo-European constraint against roots of the form *T...D?-.

Other languages

Grassmann's law is also known to occur in Ofo, an extinct and underdocumented Siouan language. The law is found in compounds such as the following:

  • óskha ('the crane') + afhá? ('white') -> osk?fha ('the white egret')

A similar phenomenon occurs in Meitei (a Tibeto-Burman language) in which an aspirated consonant is deaspirated if preceded by an aspirated consonant (including /h/, /s/) in the previous syllable. The deaspirated consonants are then voiced between sonorants.

  • /t?in-/ ('pierce') + /-k??t/ ('upward') -> /t?in??t/ ('pierce upwards')
  • /s/ ('cow') + /k?om/ ('udder') -> /s?om/ ('milk')
  • /hi-/ ('trim') + /-t?ok/ ('outward') -> /hidok/ ('trim outwards')

Hadza, spoken in Northern Tanzania, exhibits Grassmann's law in its lexicon, but most obviously in reduplication:

/t?e-te?e-mae/ 'look at each other', from /te?e/ 'look'

In Hadza, /h/ has no effect on aspiration.

A similar effect takes place in Koti and other Makhuwa languages, where it was dubbed Katupha's law in Schadeberg (1999). If two aspirated consonants are brought together in one stem, the first loses its aspiration. The effect is particularly clear in reduplicated words: kopikophi 'eyelash'; piriphiri 'pepper' (cf. Swahili 'piripiri'); okukuttha 'to wipe'. This is slightly different than in Greek and Sanskrit, in that the two syllables need not be adjacent.

The four Salishan languages Salish-Spokane-Kalispel, Okanagan, Shuswap and Tillamook exhibit a similar process affecting ejective rather aspirated consonants, which has been called "Grassmann's law for Salish", for example Shuswap underlying /x-t'?k-t'?k?-é?n/ 'crutches' -> surface /xt?kt'?k?é?n/.[2]

See also

References

  1. ^ See discussion in Collinge (1985:47-61)
  2. ^ Laurence C. Thompson, M. Terry Thompson, "A Grassmann's Law for Salish" Oceanic Linguistics Special Publications 20:134-147 (1985) JSTOR 20006717

Sources

  • Collinge, N.E. (1985), The Laws of Indo-European, Amsterdam: John Benjamins, ISBN 0-915027-75-5 
  • Chelliah, Shobhana L. (1997). A grammar of Meithei. Berlin: Mouton de Gruyter. ISBN 0-19-564331-3.
  • de Reuse, Willem J. (1981). Grassmann's law in Ofo. International Journal of American Linguistics, 47 (3), 243-244.
  • Sag, Ivan. A. (1974) "The Grassmann's Law Ordering Pseudoparadox," Linguistic Inquiry 5, 591-607.
  • Czaykowska-Higgins, Ewa & Kinkade, M. Dale (1998) Salish Languages and Linguistics, Trends in Linguistics. Studies and Monographs, 107, 1-68.

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