剌 (là) is a literary adjective meaning 'perverse, unreasonable, or absurd.' It is rarely used alone in modern Chinese; you are more likely to encounter it in formal or classical compounds such as 乖剌 (guāi là, 'perverse; eccentric') or 剌谬 (là miù, 'absurd; contradictory'). Use it sparingly, mainly in written or rhetorical contexts where you want to convey a sense of behavior or logic that deviates sharply from the norm.