ENThe paper presents the results of an instrumental and auditory experiment which show the existence of the distinctive secondary stress in forms of the type acc. pl. in Pašušvys subdialcct (subdialccl belongs to the nothern West-Aukštaitian dialect of Lithuania). The word-final short vowels in the endings which could basically possess the main stress and those of never stressed short word-final vowels are differentiated by the following prosodic features: average pitch level and relative duration. These differences are statistically reliable.