Synonyms for Stern (same or very similar meaning)
WordNet sense 1 (United States concert violinist (born in Russia in 1920)):
Isaac Stern
WordNet sense 2 (the fleshy part of the human body that you sit on):
backside, behind, bottom, bum, buns, buttocks, can, derriere, fanny, hindquarters, posterior, rear, rump, seat, tail, tush, arse, fundament, keister, nates, prat, tooshie, tush, tail end, hind end
WordNet sense 3 (the rear part of a ship):
poop, quarter, after part
WordNet sense 4 (severely simple):
severe, stark, austere
WordNet sense 5 (not elaborate or elaborated; simple):
plain
WordNet sense 6 (not to be placated or appeased or moved by entreaty):
grim, inexorable, relentless, unforgiving, unrelenting, unappeasable
WordNet sense 7 (incapable of being placated):
implacable
WordNet sense 8 (characterized by strictness, severity, or restraint):
strict, nonindulgent
WordNet sense 9 (severe and unremitting in making demands):
exacting
WordNet sense 10 (requiring more than usually expected or thought due; especially great patience and effort and skill):
demanding
From the ODE community, based on WordNet
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