It's this sort of underhand tactic that makes it hard to see products shrinking, which is spreading throughout our supermarket aisles, to everything from toilet roll to Toblerones.
" Her father (inclining his head towards the inner room) was as good a feller as ever lived. He always had his great indignation ready against anything underhand."
He was friendly, in a treacherous sort of way, smiling into one's face the while he meditated some underhand trick, as, for instance, when he stole from Buck's food at the first meal.