III.

Evolution

In general the evolution of the Indo-European languages displays a progressive decay of inflection. Thus, Proto-Indo-European seems to have been highly inflected, as are ancient languages such as Sanskrit, Avestan, and classical Greek; in contrast, comparatively modern languages, such as English, French, and Persian, have moved toward an analytic system (using prepositional phrases and auxiliary verbs). In large part the decay of inflection was a result of the loss of the final syllables of many words over time, so that modern Indo-European words are often much shorter than the ancestral Proto-Indo-European words. Many languages also developed new forms and grammatical distinctions. Changes in the meanings of individual words have been extensive.