Use 'indisposed' when politely excusing absence due to mild illness without sharing details. Mr. Brown is indisposed and won't attend the meeting.
Pro Tip 2/3
Formal Excuse
'Indisposed' is a formal and vague way to excuse oneself or someone else due to health. Please inform the guests that I am indisposed this evening.
Pro Tip 3/3
Temporary Condition
'Indisposed' often implies a short-term condition, not a serious or chronic illness. She's been indisposed since morning but should be better by tomorrow.