One immutable record. No silent merging.

Academic teaching rationale

### gagadürüdatu *“she quadruples well; the female one who quadruples well.”* The form **gagadürüdatu** is built upon the root *agadürüda*, “to quadruple” (NISAMINA master dictionary). To it are joined the attributive prefix *ga-*, which, set before a verb, says the action is done well or skilfully — and before a noun, 'having / with'; then the element *-tu* (3SG.F/AGT), whose force is given by the elder paradigm. Taken whole, the word means precisely “she quadruples well; the female one who quadruples well” — its gloss states the fully-inflected sense, never the bare meaning of the root. Set against its kin, **nagadürüda** (“I quadruple”); **bagadürüda** (“you quadruple”): each shares the same stem yet bends it to a different shade of meaning, which is exactly how Garífuna wins great precision from a single root. *The construction rests on Haurholm-Larsen 2016 §3.3.4 (-ti/-tu); Quesada 2017 §3 person-indexation. This is a principled composition — a cited root joined to a cited paradigm — and so it is offered for fluent-elder validation rather than asserted as attested.*