1.  brush up(v = verb.cognition) refresh, review - refresh one's memory; "I reviewed the material before the test"
is one way to call back, call up, recall, recollect, remember, retrieve, think
Derived form noun brushup₁
Sample sentences: Somebody ----s something; Somebody ----s PP

2.  brush up(v = verb.change) polish, polish up, round, round off - bring to a highly developed, finished, or refined state; "polish your social manners"
is one way to hone, perfect
Sample sentences: Somebody ----s something; Something ----s something

VB  be clean, render clean, clean, cleanse, mundify, rinse, wring, flush, full, wipe, mop, sponge, scour, swab, scrub, brush up, wash, lave, launder, buck, absterge, deterge, decrassify, clear, purify, depurate, despumate, defecate, purge, expurgate, elutriate, lixiviate, edulcorate, clarify, refine, rack, filter, filtrate, drain, strain, disinfect, fumigate, ventilate, deodorize, whitewash, castrate, emasculate, sift, winnow, pick, weed, comb, rake, brush, sweep, rout out, clear out, sweep out, make a clean sweep of.

VB  improve, be better, become better, get better, mend, amend, advance, ascend, increase, fructify, ripen, mature, pick up, come about, rally, take a favorable turn, turn over a new leaf, turn the corner, raise one's head, sow one's wild oats, recover, be better, be improved by, turn to right account, turn to good account, turn to best account, profit by, reap the benefit of, make good use of, make capital out of, place to good account, render better, improve, mend, amend, better, ameliorate, meliorate, correct, decrassify, improve upon, refine upon, rectify, enrich, mellow, elaborate, fatten, promote, cultivate, advance, forward, enhance, bring forward, bring on, foster, invigorate, touch up, rub up, brush up, furbish up, bolster up, vamp up, brighten up, warm up, polish, cook, make the most of, set off to advantage, prune, repair, put in order, review, revise, make corrections, make improvements, doctor, purify, relieve, refresh, infuse new blood into, recruit, reform, remodel, reorganize, new model, view in a new light, think better of, appeal from Philip drunk to Philip sober, palliate, mitigate, lessen an evil.

VB  prepare, get ready, make ready, make preparations, settle preliminaries, get up, sound the note of preparation, set in order, put in order, forecast, prepare the ground, plow the ground, dress the ground, till the soil, cultivate the soil, predispose, sow the seed, lay a train, dig a mine, lay the groundwork, fix the groundwork, lay the basis, fix the basis, lay the foundations, fix the foundations, dig the foundations, erect the scaffolding, lay the first stone, roughhew, cut out work, block out, hammer out, lick into shape, elaborate, mature, ripen, mellow, season, bring to maturity, nurture, hatch, cook, brew, temper, anneal, smelt, barbecue, infumate, maturate, equip, arm, man, fit-out, fit up, furnish, rig, dress, garnish, betrim, accouter, array, fettle, fledge, dress up, furbish up, brush up, vamp up, refurbish, sharpen one's tools, trim one's foils, set, prime, attune, whet the knife, whet the sword, wind up, screw up, adjust, put in trim, put in train, put in gear, put in working order, put in tune, put in a groove for, put in harness, pack, train, inure, breed, prepare for, rehearse, make provision for, take steps, take measures, take precautions, provide, provide against, beat up for recruits, open the door to, set one's house in order, make all snug, clear the decks, clear for action, close one's ranks, shuffle the cards, prepare oneself, serve an apprenticeship, lay oneself out for, get into harness, gird up one's loins, buckle on one's armor, reculer pour mieux sauter, prime and load, shoulder arms, get the steam up, put the horses to, guard against, make sure against, forearm, make sure, prepare for the evil day, have a rod in pickle, provide against a rainy day, feather one's nest, lay in provisions, make investments, keep on foot, be prepared, be ready, hold oneself in readiness, keep one's powder dry, lie in wait for, anticipate, principiis obstare, veniente occurrere morbo.

act up, add up, air brush, ante up, back up, backed up, ball up, balled up, bang up, bear up, beat up, beef up, beefed up, belly up, belt up, bind up, blaze up, block up, blow up, blowing up, blown up, board up, bob up, bollix up, bollixed up, bollocks up, bolster up, bomb up, bone up, book up, boost up, botch up, bottle up, bound up, box up, brace up, break up, brick up, bridle up, bring up, bringing up, brisk up, bristle brush, bristle up, brush, brush aside, brush cut, brush discharge, brush down, brush fire, brush kangaroo, brush off, brush on, brush turkey, brush wheel, brush wolf, bubble up, buck up, bucked up, bud brush, build up, bump up, bunch up, bundle up, buoy up, burn up, bust up, butter up, button up, buy up, call up, carve up, cast up, catch up, catch up with, caught up, caught up in, chain up, chalk up, charge up, chat up, check up on, cheer up, chew up, chin up, chirk up, chock up, choke up, choose up, chop up, chuck up the sponge, chum up, churn up, clam up, clap up, clean up, clear up, climb up, clock up, clog up, close up, cloud up, clouding up, clutter up, cobble up, cock up, come up, come up against, come up to, conjure up, cook up, coop up, cork up, cotton up, cough up, coughing up, couple up, cover up, coyote brush, cozy up, crack up, crank up, crap up, creep up, crock up, crop up, curl up, curled up, cut up, dam up, deck up, dig up, digging up, dish up, divided up, divvy up, do up, doctor up, doll up, dolled up, done up, dope up, double up, drag up, draw up, dream up, dredge up, dress up, dried up, drink up, drive up, drive up the wall, drum up, dry up, drying up, dummy up, earth up, ease up, eat up, edge up, end up, even up, face up, face up to, faggot up, fake up, fancied up, fancy up, fatten up, fed up, felt up, fess up, fetch up, fig up, fill up, finish up, fire up, firm up, fix up, flame up, flare up, fluff up, fog up, fold up, follow up, follow up on, foot up, fork up, fort up, foul up, frame up, freshen up, fuck up, furbish up, gang up, gang up on, gas up, gather up, gear up, get up, ginger up, give up, giving up, glam up, go up, go up in smoke, gobble up, grow up, grown up, grub up, gum up, gummed up, gussied up, gussy up, ham it up, hang up, hard up, hash up, haul up, head up, heap up, heat up, heated up, heave up, heft up, held up, het up, high up, higher up, hike up, hit it up, hit up, hitch up, hive up, hoke up, hold up, hole up, hook up, hook up with, hop up, hopped up, hot up, hung up, hurry up, hush up, hype up, ice up, jack up, jazz up, jolly up, juice up, jump up, jumping up and down, keep up, kept up, key up, keyed up, kick up, kink up, kit up, knock up, lace up, laid up, land up, lap up, laugh it up, lay up, lead up, let up, lift up, light up, lighten up, limber up, line up, lined up, link up, live it up, live up to, liven up, load up, lock up, log up, look up, look up to, looking up, loosen up, louse up, made up, make up, make up one's mind, make up to, mark up, mat up, matte up, measure up, measure up to, meet up with, mess up, messed up, mix up, mixed up, mock up, mop up, mount up, mount up to, move up, muck up, mucked up, muddy up, muffle up, mug up, muster up, offer up, open up, own up, pal up, pass up, patch up, pay up, pen up, pent up, pep up, perk up, perked up, pick up, pick up the gauntlet, pile up, pin up, pipe up, play up, play up to, plump up, point up, polish up, pony up, pop up, pound up, prang up, pretty up, prick up, prim up, prop up, propping up, psych up, psyched up, puff up, puffed up, pull up, pull up short, pull up stakes, pumped up, push up, put up, put up job, put up to, put up with, quail brush, queue up, rabbit brush, rachet up, rack up, raise up, rake up, ramp up, rev up, rig up, rigger brush, ring up, rip up, rise up, roll up, rope up, rough up, round up, rout up, rub up, ruck up, ruffle up, run up, runner up, sable brush, sack up, sage brush, save up, saved up, scale up, scare up, scoop up, scrape up, scratch up, screw up, scrub brush, scrub up, scrubbing brush, scrunch up, seal up, sell up, serve up, set up, sew up, sex up, shack up, shake up, shape up, shaving brush, shine up, shine up to, shoot up, shore up, shoring up, show up, shown up, shrivel up, shut up, sidle up, sign up, silt up, sit up, size up, slack up, slice up, slick up, slicked up, slip up, slow up, slurp up, smarten up, smash up, smell up, snap up, snarl up, snatch up, sneak up, soak up, soaking up, soar up, sober up, soften up, sop up, soup up, speak up, speak up for, spear up, speed up, speeded up, spice up, spiff up, spiffed up, spirit up, spit up, split up, sponge up, spring up, spruce up, spruced up, square up, stack up, stand up, stand up for, stand up to, start up, stay up, steam up, steamed up, step up, stick up, stick up for, stink up, stir up, stirred up, stop up, stopped up, stored up, straighten up, strike up, string up, stuck up, suck up, suck up to, sum up, summing up, summon up, sunny-side up, swallow up, sweep up, swell up, swept up, swoop up, swot up, take up, take up arms, take up with, taken up, tart up, team up, tear up, tee up, tense up, think up, throw up, tidy up, tie up, tied up, tier up, tighten up, tog up, togged up, tone up, toss up, tot up, tote up, touch up, touch up paint, trice up, trick up, trip up, true up, trump up, trumped up, tune up, turn up, turn up the heat, turn up the pressure, turned up, tying up, up, up and down, up country, up here, up in arms, up in the air, up on, up quark, up the stairs, up to, up to her neck, up to his neck, up to my neck, up to now, up to our necks, up to their necks, up to your neck, use up, used up, using up, vamp up, vomit up, wake up, waking up, wall up, warm up, wash up, washed up, well up, whip up, whomp up, whoop it up, wind up, wipe up, wise up, work up, worked up, wound up, wrack up, wrap up, wrapped up, wrapped up in, write up, wrought up, yield up, zip up