reduce
re-duce
verb
To make something smaller or less in amount, degree, or size.
"We must reduce our carbon footprint."
Thesaurus
Synonyms: keep down, subdue, repress, subjugate, quash, boil down, concentrate, decoct, come down, cut down, trim, trim down
Antonyms: blow up, dilate, elaborate, enlarge, expand, expatiate, exposit, expound, flesh out, gain, lucubrate, magnify