Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
tizzy [ˈtɪzɪ] n
to be in a tizzy волнова́ться (разволнова́ться perf) по пустяка́м
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: