Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
appreciation [əpriːʃɪˈeɪʃən] n (understanding) понима́ние; (gratitude) призна́тельность f (COMM) повыше́ние сто́имости
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: