Reduce

намалявам

namaljavam

(to bring down the size, quantity, quality, value or intensity of something)

опростявам

oprostjavam

(math: to simplify an equation or formula without changing its value)

отслабвам

otslabvam

(to lose weight)

понижавам

ponižavam

(to bring to an inferior rank; to degrade, to demote)

редуцирам

reduciram

(chemistry: to add electrons / hydrogen or to remove oxygen)