indisposed

"The House of Silk" からの引用です。

'You have not heard? Have you not seen a newspaper?'
She shook her head. 'I don't interest myself in the news. My hasband does not encourage it.'
I considered showing her the piece I had just been reading, then decided against it. 'I'm afraid Mr Sherlock Holmes is indisposed,' I said. 'And is likely to be for some time.'
"indisposed" の意味を調べます。
・Oxford English Dictionary: Averse; unwilling.: the potential audience seemed indisposed to attend

・Collins Dictionary: If you say that someone is indisposed, you mean that they are not available because they are ill, or for a reason that you do not want to reveal.: The speaker was regrettably indisposed.
・Cambridge English Dictionary: not willing: After their rude attitude in the past, we feel distinctly indisposed to help them now.
日本語の「具合が悪い」と似ている感じがします。