" Chiefly periscopes, I think," said she. "The Man From the Clouds" by J. Storer Clouston

It's chiefly in putting your mind on it when you are working, isn't it? "Betty Lee, Freshman" by Harriet Pyne Grove

It was well for her that she did not increase her troubles in this way; but to do her justice, what she was chiefly anxious about was to avoid increasing her husband's troubles. "Impressions of Theophrastus Such" by George Eliot