indecipherable

US /ˌɪn.dɪˈsaɪ.fɚ.ə.bəl/
UK /ˌɪn.dɪˈsaɪ.fɚ.ə.bəl/
1.

해독할 수 없는

unable to be read or understood:

:
•
Her handwriting is virtually indecipherable.