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sakta - Wiktionary, the free dictionary

From Wiktionary, the free dictionary

sakta

  1. slow

sakta

  1. slowly

Could imply "gently" in some contexts, similar to how "simmer slowly" is a common collocation, but the base meaning is just "slow"/"slowly."

sakta (present saktar, preterite saktade, supine saktat, imperative sakta)

  1. (usually with a particle, especially ner (down), (less common) in, or (least common) av) to slow down

"Sakta in" is often used for slowing down for a particular reason (often when approaching something), like when preparing to make a turn. The difference from the more general "sakta ner" is very subtle though, and they are interchangeable. "Sakta av" is more common for abstract things, like the economy.