UPSC CDS 1 2020 English Paper

The most appropriate antonym for the given word is ‘Nastiness’ as it refers to the state of the state or quality of being nasty.
Meaning of the other words are:
Charity means an organization set up to provide help and raise money for those in need.
Benevolence means the quality of being well meaning, kindness.
Likeliness means a feeling of regard or fondness.