Definition of "affectation"

This poem is strongly tinctured with those pedantic affectations concerning the passion of love ...

1810, Dr. Samuel Johnson, “Life of Gower”, in The Works of the English Poets‎, Digitized edition, published 2009

[T]hey were not the spoiled children of affectation and refinement, but a bold, vigorous, independent race of thinkers, with prodigious strength and energy, with none but natural grace, and heartfelt unobtrusive delicacy.

1820, William Hazlitt, “Lecture I. Introductory.”, in Lectures Chiefly on the Dramatic Literature of the Age of Elizabeth. […], London: Stodart and Steuart, […]; Edinburgh: Bell and Bradfute, page 2