indisposed

US /ˌɪn.dɪˈspoʊzd/
UK /ˌɪn.dɪˈspoʊzd/
1.

khó chịu

sick, especially in a way that makes you unable to do something:

:
•
Sheila Jones is indisposed, so the part of the Countess will be sung tonight by Della Drake.