indisposed

Indisposed means slightly unwell or unwilling.

Someone who is indisposed may be mildly ill: She's indisposed and won't be joining us for dinner.

The word often serves as a polite or evasive way to explain absence—the indisposition might be genuine illness, or it might be reluctance dressed up in formal language.

To be indisposed toward something is to be disinclined: He was indisposed to help.