This word intrigues me because it contains a Hebrew root, SDR, which infers order and sequence, the Seder meal, where the dishes are served in the right order, or the Sidur, the Hebrew order of service, but here putting others first. It has a close relative, STR, which occurs in words where the length exceeds the width, e.g. street, stride, straight, strap, strip, stroke, stir, stirrup, store, stare, straw, stray, instruct, stream, setter, streak, strain, strive, strew, strafe, stroll, strike...
My least favourite word is 'smarts', as in 'got smarts', an American English usage to describe a clever person. It's the requisitioning of a perfectly innocent adjective and verb to serve as a noun, and then to pluralise it, which is so painful on the British English ear, especially on the printed page. Two nations divided by a single language? You bet.