..." It was of little use to urge that the change of heart implied a contentment with one wife equal to his present complacency in polygamy... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...When, however, we came up, he was seated on a branch of a tree, leisurely surveying us and the dogs, with great complacency...
Austin Steward 「Twenty-Two Years a Slave, and Forty Years a Freeman」
...Some night, while ourgenerals slept in smug complacency, all that gray green horde ofwolves would belch forth—from the very earth...
Various 「Astounding Stories, May, 1931」
...There is an inevitable tendency in man to create; andthere is nothing which he contemplates with so much complacency as thework of his own hands...
John Lort Stokes 「Discoveries in Australia, Volume 2」
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