He disliked the person, but projected in just the opposite way. It could be described as self-discipline or self-control.

the great Gatsby is finally appropriate to the variations interior the very prosperous and something individuals. whilst Fitzgerald says that Daisy’s voice is crammed with funds, he ability that properly-knowledgeable, careless way of talking gently approximately issues this is an excellent deal to basic human beings. Daisy is extremely privledged ;not something that happens to her makes an excellent number of a dent interior the armor that her wealth delivers. she will shrug off, chuckle off, or airily push aside maximum of what’s gruesome That privledge is what Nick and Gatsby hear in her voice.

i’m guessing it means that when he went to shake the person’s hand he acted as if he liked the other person even though he disliked them

I read this book and it was sooo great, you should read it if you havent.

But I don’t remember this quote very well… but maybe sparknotes.com might help