Opposites could include: unwell ill sick poorly ailing indisposed
She was sorry to miss the meeting but she was indisposed.
somewhat ill or pronedd to illness
noun form = indisposition.
ailing, indisposed, unwell
I believe that saying is indisposed. It means you're busy
1. Disinclination; unwillingness.2. A minor ailment or illness.
weak, failing, poor, flawed, unstable, deficient, ill, poorly, sick, weak, indisposed
He stands in if the Prime Minister is overseas or indisposed - much the same as the Vice President in the United States.
Indisposed is often defined as "feeling sick or unwell." It's also sometimes used to just mean incapable of accepting visitors. If the cops were there to arrest him, it may mean it's time to find a new boyfriend.
unhealthy, harmful, detrimental, destructive, injurious, damaging, deleterious, malign, noxious, poisonous, insalubrious, baleful, sickly, ill, unwell, ailing, sick, indisposed, weak, wan, sallow, frail, delicate, infirm, unwholesome, morbid, macabre, twisted, abnormal, warped, depraved, unnatural, sick, wrong.
Not tractable; not easily governed, managed, or directed; indisposed to be taught, disciplined, or tamed; violent; stubborn; obstinate; refractory; as, an intractable child.