Usage Note
Sumamente is a formal intensifier meaning 'extremely' or 'highly', built on sumo (highest/utmost). It is more elevated in register than muy and is typical of written or formal spoken Spanish. Pairing it with an adjective like sumamente importante adds weight without the colloquial ring of súper importante.
Examples
"El examen fue sumamente difícil."
Natural Translation
The exam was extremely difficult.

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