What this suffix does
-turned forms compound adjectives that describe the quality of shaping — both physical (a well-turned piece of woodwork on a lathe) and linguistic (a well-turned phrase, a well-turned compliment). In literary and critical writing, "well-turned" is primarily used of linguistic production: a well-turned phrase is one that has been crafted with skill, whose word order and rhythm are exactly right, whose surprise or elegance is the result of deliberate and precise crafting. "Ill-turned" or "poorly-turned" implies clumsy or infelicitous phrasing. These compounds belong to the vocabulary of literary craft.