Sentence:  I asked Quasimodo recently how he accomplished this , and he replied that he had painted his model `` a beautiful shade of red and then had her breathe on the canvas '' , which was his typical tongue-in-cheek way of chiding me for my lack of <WSD>sensitivity</WSD> . 
Meaning of the word marked with <WSD> tags:  sensitivity to emotional feelings (of self and others)