Probably from Proto-Indo-European *terp- (“to tremble, to quiver”) + *-ъkъ, cognate with Lithuanian tirpùs (“soluble, fusible”). Martynov tentively considers a reanalysis of an earlier *kьrpъkъ in order to match it with Lithuanian kir̃pti (“to trim, to cut”).
singular | masculine | feminine | neuter |
---|---|---|---|
nominative | *tьrpъkъ | *tьrpъka | *tьrpъko |
genitive | *tьrpъka | *tьrpъky | *tьrpъka |
dative | *tьrpъku | *tьrpъkě | *tьrpъku |
accusative | *tьrpъkъ | *tьrpъkǫ | *tьrpъko |
instrumental | *tьrpъkomь | *tьrpъkojǫ | *tьrpъkomь |
locative | *tьrpъkě | *tьrpъkě | *tьrpъkě |
vocative | *tьrpъke | *tьrpъko | *tьrpъko |
dual | masculine | feminine | neuter |
nominative | *tьrpъka | *tьrpъkě | *tьrpъkě |
genitive | *tьrpъku | *tьrpъku | *tьrpъku |
dative | *tьrpъkoma | *tьrpъkama | *tьrpъkoma |
accusative | *tьrpъka | *tьrpъkě | *tьrpъkě |
instrumental | *tьrpъkoma | *tьrpъkama | *tьrpъkoma |
locative | *tьrpъku | *tьrpъku | *tьrpъku |
vocative | *tьrpъka | *tьrpъkě | *tьrpъkě |
plural | masculine | feminine | neuter |
nominative | *tьrpъki | *tьrpъky | *tьrpъka |
genitive | *tьrpъkъ | *tьrpъkъ | *tьrpъkъ |
dative | *tьrpъkomъ | *tьrpъkamъ | *tьrpъkomъ |
accusative | *tьrpъky | *tьrpъky | *tьrpъka |
instrumental | *tьrpъky | *tьrpъkami | *tьrpъky |
locative | *tьrpъkěxъ | *tьrpъkaxъ | *tьrpъkěxъ |
vocative | *tьrpъki | *tьrpъky | *tьrpъka |