Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
word-perfect [ˈwəːdˈpəːfɪkt] adj
to be word-perfect (person) знать (impf) ка́ждое сло́во
the speech was word-perfect речь была́ прекра́сно подгото́влена
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.