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Abstract Evidence from Palaic shows that contrary to some claims Hittite nasal presents such as šunna - and tarna - do not reflect original PIE ḫi -inflection. This paper presents a new account of how they come to inflect as ḫi -verbs in attested Hittite. It also shows that the so-called class of “ ḫi -verbs in - i -” reflects in part presents with a suffix *- ói /- i - (Kloekhorst 2006 & 2008), but in part modified acrostatic presents with * o /zero root ablaut. The lexicalized participle LÚ pitteant - ‘fugitive’ preserves a trace of the original acrostatic paradigm with * o/e root ablaut. Reasons are also given for why this class appears in Nuclear Indo-European as * ye/o - presents with either * e - or zero-grade of the root.
H. Craig Melchert (2022) studied this question.