the suffix would be "ness"
callousness or heartlessness
It is not an idiom. Unkindness is often called heartlessness, and so the expression "have a heart" means "Do not be unkind."
The opposite word of "कृपा" (krupa) in Hindi is "निर्दयता" (nirdayata), which means cruelty or heartlessness.
The suffix for undo is to not do.
the suffix is on
There is no suffix in misjudge.
The suffix of inundate is -ate. This suffix means in condition of.
The suffix of radiation is -tion. This suffix means the process of.
The suffix is -er, meaning "one who campaigns."
Yes, the suffix is tion
-Less is the suffix.
The suffix to incessantly is -ly.