He is fastidious and will have an affectation of his own.
Willoughby’s behaviour in taking leave of them, his embarrassment, and affectation of cheerfulness, and, above all, his unwillingness to accept her mother’s invitation, a backwardness so unlike a lover, so unlike himself, greatly disturbed her.
"I suspect," said Elinor, "that to avoid one kind of affectation, Edward here falls into another.
"There now," said Miss Steele, affectedly simpering, "everybody laughs at me so about the Doctor, and I cannot think why.
There are no more uses of "affectation" in the book.
Show samples from other sources
Her apparent wealth was proven to be an affectation.
He’s a good actor. He can change affectations and mannerisms like most people change clothes.