It is to 'ail'
That is not a word. The actual word would be unsuitable. It means inappropriate.
The only word I know of that is basically the same would be "ill."
The word "reply" means the same as respond.
You are full of Malice wishes. Malice means ill will.
Mal (in spanish, and the prefix) means bad or ill.
If that could be "i," the answer is "ill."
It means what I did when I wrote my brother. I chose my words ill - and it expressed foolishness. I was the fool and the word, poorly chosen, had become my messenger.
poorly, unwell, under the weather
Are you thinking of "malice"? Maybe "animosity"? Or "loathing"?
Surprised almost means the same as startled.
There is no such word as ill-balanced. I presume you mean unbalanced which means some who is erratic, unsound, not stable, physically or mentally