Definition: non-udatta, absence of the acute accent;one of the Bāhyaprayatnas or external efforts to produce sound. This sense possibly refers to a stage or a time when only one accent, the acute or उदात्त was recognized just as in English and other languages at present, This udatta was given to only one vowel in a single word (simple or compound) and all the other vowels were uttered accentless.i.e. अनुदात्त. Possibly with this idea.in view, the standard rule 'अनुदात्तं पदमेकवर्जम्'* was laid down by Panini. P.VI.1.158. As, however, the syllable, just preceding the accented (उदात्त) syllable, was uttered with a very low tone, it was called अनुदात्ततर, while if the syllables succeeding the accented syllable showed a gradual fall in case they happened to be consecutive and more than two, the syllable succeeding the उदात्त was given a mid-way tone, called स्वरितः cf. उदात्तादनुदात्तस्य स्वरितः. Thus, in the utterance of Vedic hymns the practice of three tones उदात्त, अनुदात्त and स्वरित came in vogue and accordingly they are found defined in all the Prātiśākhya and grammar works;cf. उच्चैरुदात्तः,नीचैरनुदात्तः समाहारः स्वरितः P.I.2.29-31, T.Pr.I.38-40, V.Pr.I.108-110, Anudātta is defined by the author of the Kāśikāvṛtti as यस्मिन्नुच्चार्यमाणे गात्राणामन्ववसर्गो नाम शिथिलीभवनं भवति, स्वरस्य मृदुता, कण्ठविवरस्य उरुता च स: अनुदात्तः cf. अन्ववसर्गो मार्दवमुरुता स्वस्येति नीचैःकराणि शब्दस्य M. Bh. on I.2.29,30. Cf. also उदात्तश्चानुदात्तश्च स्वरितश्च त्रयः स्वराः । अायामविश्रम्भोक्षपैस्त उच्यन्तेSक्षराश्रयाः ॥ R. Pr. III.1. The term anudātta is translated by the word 'grave' as opposed to acute' (udātta,) and 'circumflex' (svarita); (2) a term applied to such roots as have their vowel अनुदात्त or grave, the chief characteristic of such roots being the non-admission of the augment इ before an ārdhadhātuka affix placed after them. (See अनिट्,).