In a way that comes from something else rather than being original or primary.
From 'derivative' (from Latin derivare, 'to draw off') plus the adverb suffix '-ly'. The root meaning is literally 'to lead/draw away from,' referring to something secondary or dependent on something else.
This word reveals how language tracks intellectual hierarchy: we use 'derivatively' when explaining that a word, idea, or right flows downstream from a primary source—it's how lawyers and philosophers talk about power and knowledge flowing from authorities.
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