The Times, June 1, 2017
‘Nonplussed’ means ‘baffled’ or ‘confused’, but it is clear from the copy that Murray feels the opposite. The right word or phrase here could be ‘not bothered’, ‘not perturbed’ or maybe ‘unfazed’. Apparently in the US ‘nonplussed’ is coming to mean ‘not perturbed’, ie the opposite of its meaning here, but the Times is not a US paper.