Sentence:  In the strictness with which he holds this view he belongs in the company of the novelists I have cited, except that he is <WSD>unkinder</WSD> and less charitable than they are. 
Meaning of the word marked with <WSD> tags:  Lacking kindness, sympathy, benevolence, gratitude, or similar; cruel, harsh or unjust; ungrateful. (From mid-14thC.)