He is generally a perfectly cool, self-poised, unimpressionable individual, with no animosity whatever toward you or anybody else, but who intends to be obeyed, not because it pleases him, but because the power behind him compels it.
"The Other Fellow"
F. Hopkinson Smith
The official "War News" printed in the Irish papers was read with detachment and reserve; stories of German atrocities were received with unimpressionable scepticism.
"The Evolution of Sinn Fein"
Robert Mitchell Henry
He had not seen his father for eighteen years, and, as he had been separated from him at the unimpressionable age of two, he may be said never to have seen him at all.
"The Wooden Horse"
Hugh Walpole