Sentence:  A waiter brought his aperitif, which was a small scotch and soda, and as he sipped it gratefully he sighed./     ‘Civilized,' he said to Mr. Campion. ‘<WSD>Humanizing</WSD>.' […] ‘Cigars and summer days and women in big hats with swansdown face-powder, that's what it reminds me of.' 
Meaning of the word marked with <WSD> tags:  To make human; to give or cause to have the fundamental properties of a human.