Antonyms for reduce

defeat:

lose, allow, surrender, encourage, fail, aid, release, enable, yield, help, assist.

humble, humiliate:

honor, fix, improve, promote, mend.

make less; decrease:

extend, strengthen, develop, prolong, laud, grow, increase, invigorate, rise, expand, amplify, lengthen, raise, stretch, enhance, praise, enlarge, win, upgrade, compliment.

noun:

dignify, inflate, up, complement, upgrade, overestimate, boost, bloat, balloon, maximize, honor, hire, overvalue, supplement, mark up, overprice, compound, exalt, distend, appreciate, uplift, advance, swell, overrate, raise.