THESAURUS
Purify
abate, abrade, absolve, abstract, acquit, atone, bate, beatify, bleach, bless, bolt, bowdlerize, canonize, chasten, clarify, clean, clean out, clean up, cleanse, clear, clear out, consecrate, curtail, decontaminate, decrassify, decrease, dedicate, deduct, delouse, depreciate, depurate, derogate, deterge, detract, devote, diminish, disinfect, disparage, distill, drain, dry-clean, dust, dust off, eat away, edulcorate, elute, enshrine, erode, essentialize, exalt, exculpate, excuse, exonerate, expiate, expurgate, extract, file away, filter, filtrate, forgive, freshen, fumigate, glorify, hallow, impair, leach, lessen, lixiviate, lustrate, narrow, oversimplify, pardon, percolate, purge, rectify, redeem, reduce, reduce to elements, refine, reform, remit, remove, restrain, retrench, rub away, saint, sanctify, sanitize, scavenge, screen, separate, set apart, shorten, shrive, sieve, sift, simplify, spiritualize, spruce, steam-clean, strain, streamline, strip down, subduct, sublimate, sublime, subtract, sweep out, sweeten, take away, take from, thin, thin out, tidy, try, wash, wear away, weed, whiten, winnow, wipe, wipe off, wipe out, wipe up, withdraw
ROGET THESAURUS
Purify
Cleanness
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.
Improvement
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.
Simpleness
VB
render simple, simplify, sift, winnow, bolt, eliminate, exclude, get rid of, clear, purify, disentangle.