to strengthen, harden, fortify; reinforce, to build/prop/shore up · to amplify · to confirm, verify, corroborate, substantiate, validate, prove, attest
çekim: geçmiş vahvistanut · şimdiki vahvistaisi · ulaç vahvistava
Etymology tree German attestierenbor. Proto-Indo-European *h₂euh₁-der.? Proto-Slavic *-ovati Old Polish -ować Polish -ować Polish atestować From German attestieren + Polish -ować. Compare Kashubian atestowac and Slovincian atastérac.