Berneker derives from Proto-Indo-European *bʰūs-ro- and connects with a group of Germanic words with a basic meaning of “blasting forth, sallying forth” — Old Norse bysia (“stream out with big power”), dialectal Norwegian bøysa (“storm forth”), buse (“barge, rush”), Swedish busa (“be up to mischief, make trouble”), East Frisian German Low German būsen (“be violent, roar, make a noise, attack”), būsterig (“stormy”). He explains the initial meaning of the Slavic as “penetrating, transparent”, which then took on different nuances in the daughter languages.
Ačaṙean adduces also Old Armenian ըմ-բոստ (əm-bost, “rebellious, stubborn”) as a cognate and on its basis reconstructs the meaning of the Proto-Indo-European root as “to sally forth, barge, hurtle out”.
singular | masculine | feminine | neuter |
---|---|---|---|
nominative | *bystrъ | *bystra | *bystro |
genitive | *bystra | *bystry | *bystra |
dative | *bystru | *bystrě | *bystru |
accusative | *bystrъ | *bystrǫ | *bystro |
instrumental | *bystromь | *bystrojǫ | *bystromь |
locative | *bystrě | *bystrě | *bystrě |
vocative | *bystre | *bystro | *bystro |
dual | masculine | feminine | neuter |
nominative | *bystra | *bystrě | *bystrě |
genitive | *bystru | *bystru | *bystru |
dative | *bystroma | *bystrama | *bystroma |
accusative | *bystra | *bystrě | *bystrě |
instrumental | *bystroma | *bystrama | *bystroma |
locative | *bystru | *bystru | *bystru |
vocative | *bystra | *bystrě | *bystrě |
plural | masculine | feminine | neuter |
nominative | *bystri | *bystry | *bystra |
genitive | *bystrъ | *bystrъ | *bystrъ |
dative | *bystromъ | *bystramъ | *bystromъ |
accusative | *bystry | *bystry | *bystra |
instrumental | *bystry | *bystrami | *bystry |
locative | *bystrěxъ | *bystraxъ | *bystrěxъ |
vocative | *bystri | *bystry | *bystra |
singular | masculine | feminine | neuter |
---|---|---|---|
nominative | *bystrъjь | *bystraja | *bystroje |
genitive | *bystrajego | *bystryję̇ | *bystrajego |
dative | *bystrujemu | *bystrěji | *bystrujemu |
accusative | *bystrъjь | *bystrǫjǫ | *bystroje |
instrumental | *bystryjimь | *bystrǫjǫ | *bystryjimь |
locative | *bystrějemь | *bystrěji | *bystrějemь |
vocative | *bystrъjь | *bystraja | *bystroje |
dual | masculine | feminine | neuter |
nominative | *bystraja | *bystrěji | *bystrěji |
genitive | *bystruju | *bystruju | *bystruju |
dative | *bystryjima | *bystryjima | *bystryjima |
accusative | *bystraja | *bystrěji | *bystrěji |
instrumental | *bystryjima | *bystryjima | *bystryjima |
locative | *bystruju | *bystruju | *bystruju |
vocative | *bystraja | *bystrěji | *bystrěji |
plural | masculine | feminine | neuter |
nominative | *bystriji | *bystryję̇ | *bystraja |
genitive | *bystrъjixъ | *bystrъjixъ | *bystrъjixъ |
dative | *bystryjimъ | *bystryjimъ | *bystryjimъ |
accusative | *bystryję̇ | *bystryję̇ | *bystraja |
instrumental | *bystryjimi | *bystryjimi | *bystryjimi |
locative | *bystryjixъ | *bystryjixъ | *bystryjixъ |
vocative | *bystriji | *bystryję̇ | *bystraja |