1 syllable:
bluff, boeuf, bruff, buff, buffe, cdf lif, chuff, cluff, cuff, cuffe, dms af, druif, duff, fluff, gccs af, gcss af, gc maf, gliff, gruff, guff, hough, huff, knuff, luff, muff, muffe, pluff, puff, rla pf, rough, ruf, ruff, ruffe, s/pdif, saiph, schliff, schuff, scruff, scuff, shruff, shuff, slough, sluff, snuff, spdif, spliff, stough, stuff, tough, tuff, uw hf, vbe af, vdiff, vse af, aue, bao, blau, blauw, blough, bough, bow, brau, brough, brow, cao, cau, chao, chiao, chow, ciao, clough, cow, crough, dao, daopao, dow, dowe, drough, fao, frau, gnau, gow, grau, graue, hao, hau, hmpao, how, howe, hsiao, jwoww, kao, kau, klaue, kough, lao, lau, lmmfao, lough, mao, now, pao, pfau, plough, plow, pough, pow, powe, prough, prow, rao, rau, sao, schlau, schlough, schow, scow, shao, shough, shrow, skow, sough, sow, sprow, strau, strough, tao, thao, thau, thou, tpe wau, tsao, vdpau, vow, wow, xiao, yao, yow, zhao, zschau

2 syllables:
acuff, ahruf, anruf, aufruf, auspuff, ausruf, babeuf, besnuff, breadstuff, bumfluff, creampuff, cream puff, dayhuff, dyestuff, earmuff, elbeuf, enough, feedstuff, foodstuff, get-tough, get tough, godbluff, goodnough, greenstuff, handcuff, hofuf, hot stuff, hufuf, leboeuf, lebouef, macduff, mcduff, mcgeough, neck ruff, off-the-cuff, outbluff, petstuff, piedboeuf, puff-puff, real stuff, rebuff, roughscuff, scottsbluff, small stuff, sob-stuff, sob stuff, tartuffe, titeuf, unstuff, vakuf, yusuf, aarau, al-fao, allow, and how, ant cow, arau, aschgrau, avow, bacau, bandow, bilbao, bow-wow, bowwow, brandow, breastplough, cabiao, cacau, cahow, carwow, cash cow, cat chow, changdao, cheng xiao, chingtao, chow chow, cibao, cocao, dadao, depauw, dessau, devow, endow, eyebrow, feldgrau, fernao, filyaw, first cow, foclmao, fuyao, guandao, hausfrau, highbrow, hofbrau, i-thou, jarchow, jungfrau, just now, kapow, know-how, kowtow, kuntao, lanao, landau, latiao, lessnau, liao, lichtblau, ling-pao, locao, luau, lubao, macao, macau, maicao, mandaue, maomao, margao, mcdow, meow, miaodao, mike howe, milch cow, milk cow, monschau, mouth bow, nandao, nanzhao, ndau, neelghau, nylghau, ogowe, outbow, pathao, pegao, pingyao, podao, pow-wow, powwow, pudao, purewow, qiao, qingdao, qipao, right now, rizhao, roflmao, rotflmao, rotglmao, sadao, safflow, sea cow, serowe, sestao, shen-pao, shimao, shitao, shou-lao, simao, snowplough, snowplow, somehow, sorkow, sound bow, speak now, taobao, tian tao, tien-pao, til now, todd-ao, tsingtao, tumbao, turnbough, unbow, unnao, warehou, wodao, wow-wow, xinyao, yarbough, youdao

3 syllables:
counterbuff, farabeuf, fisticuff, good enough, hufflepuff, in the buff, magaluf, off the cuff, overruff, overstuff, powder-puff, powderpuff, powerpuff, semi-bluff, semi-tough, sip-and-puff, soon enough, sure enough, trouser cuff, well enough, xtratuf, ahegao, amy chow, andrew howe, anyhow, apayao, atyrau, bajaao, barbakow, bella ciao, cabuyao, cacajao, cainiao, carabao, cedeao, changpeng zhao, conceicao, curaao, curacao, dairy cow, dazibao, disallow, disavow, disavow', ehefrau, eigengrau, geforce now, gong lijiao, goodenough, guilinggao, here and now, he bingjiao, hongyipao, huang zitao, huludao, humacao, ifugao, initao, jiandao, kabeljauw, krakatao, liang chow, lister plough, lister plow, liuyedao, mahilyow, maranhao, miagao, middlebrow, mindanao, morgenthau, overcrow, pathet-lao, puppy chow, qinhuangdao, recurve bow, rowdydow, sacred cow, schering-plough, shaohao, shi tingmao, sillyhow, siopao, springing cow, take a bow, tamarao, tongliao, toutiao, until now, up to now, wikihow, xiantiandao, xiaolongbao, yanmaodao, yaorenmao, yiguandao, youtiao, zhanmadao, zhenniao

4 syllables:
abudefduf, anne-marie duff, jigglypuff, marshmallow fluff, oddly enough, oeil-de-boeuf, oeils-de-boeuf, strangely enough, sure-enough, anhalt-dessau, charlotte nicdao, john allen chau, kitaotao, lmfao, maguindanao, manny pacquiao, marianao, martin landau, maschinenbau, violin bow

5 syllables:
create from raw stuff, opchanacanough, opechancanough, athletic bilbao, caniapiscau, coco de macao, holier-than-thou

6 syllables:
curiously enough, the world is not enough

7 syllables:
interestingly enough