2 syllables:
braai, btr-40, caughey, flawy, kraai, law he, ma he, nr-40, pai, rai, sauey, saw he, sha-0, spahee, stai, strawy, svt-40, thawy, wd-40

3 syllables:
aasai, abbai, adlai, amx-40, arai, aurai, banzai, barai, basai, bavai, bolyai, bomai, budai, cambrai, chagai, charpai, chiai, chuai, damai, deblai, desai, dhakai, dodai, durai, fida'i, funai, gabbai, gansbaai, gardai, granai, gulai, hirai, hualpai, icfai, itjtawy, karai, kasai, kawai, korai, kowai, kublai, kurai, lakai, makai, mangrai, manzai, marai, masai, massai, matai, mathai, mazhai, mccaughey, mcgaughey, mcgaughy, mcgoey, menai, metai, mirai, moirai, mukai, mulai, nagai, nakai, narai, nilai, nogai, of-40, oniai, patrai, paypai, peulthai, pirai, poukai, pro40, qashqai, quillai, rad140, ragbrai, rehaai, revai, sagaie, sakai, sangai, sarai, savai, serai, sevai, shanzhai, shiai, simpai, slowthai, somrai, sumai, takai, tamai, tarai, terai, thivai, vasai, xu kai, yaoguai, zaccai

4 syllables:
aidalai, almarai, amasai, apav40, assagai, avishai, barzillai, battotai, bujingai, cabiai, chabudai, chantabbai, clarifai, cobra kai, comma.ai, fa'amatai, fly540, gundagai, habutai, hiereiai, horagai, hualapai, ikigai, intel740, isekai, j'attendrai, jagatai, jaghatai, kashibai, kokutai, korovai, kumagai, kurultai, lamanai, lanikai, maasai, madurai, malakai, mandukhai, mirabai, mp 40, muthirai, nehmetawy, nicolai, np-40, ochiai, olduvai, omiai, otter.ai, owarai, panerai, pony.ai, sakurai, shinjitai, sokutai, this is 40, tsvangirai, walapai, yakuza 0, yamatai, yavapai

5 syllables:
aaaai, abel mutai, anna sawai, avantibai, bakhchysarai, begusarai, byakkotai, chelyabinsk-40, chippiparai, ganj-i-sawai, kamishibai, kenpeitai, mariyadhai, mokomokai, momo hirai, mt940, mughalsarai, neerparavai, parvatibai, ppd-40, pudukkottai, pulipaarvai, raseiniai, rpg-40, sakurakai, tsuyuharai, whenuapai, zaitokukai

6 syllables:
anthimanthaarai, azukiarai, koothu-p-pattarai, mayiladuthurai, potassium-40, rp2040, valvettithurai

7 syllables:
plutonium-240

8 syllables:
mamihlapinatapai, sarpatta parambarai, takahiro sakurai

2 syllables:
bury, mary, dearie, merry, leary, veery, wary, maori, perry, bari, berry, eerie, starry, quarry, glory, faery, jury, leery, barrie, storey, dory, mari, larry, surrey, cowry, ferry, gari, dowry, cheery, fairy, harry, gary, parry, flurry, clary, dairy, fury, theory, marry, scary, lory, blurry, hurry, airy, curry, very, terry, shari, tory, carry, kauri, furry, vary, sari, wherry, weary, erie, sorry, hoary, aerie, corrie, murray, barry, tarry, barre, saury, deary, burry, houri, eyrie, gharry, cowrie, curie, hairy, gory, barye, slurry, cherry, story, kerry, lori, prairie, dreary, faerie, scurry, sherry, bleary, teary, chary, jerry, worry, glary, lorry, furore, wiry, cary

3 syllables:
lake erie, remarry, expiry, set theory, sob story, miscarry, short story, sweet cherry, abampere, guinevere, diary, succory, bohr theory, venturi, game theory, inquiry, unwary, hail mary, aweary, group theory, glengarry, savoury, enquiry, old glory, black cherry, bihari, ground cherry, filaree, john dory, harare, muscari, safari, bird cherry, grand jury, germ theory, canary, denary, missouri, wave theory, contrary, wild cherry

4 syllables:
kalahari, actuary, overweary, harakiri, dhaulagiri, mata hari, charivari, morning glory, quantum theory, virgin mary, harikari, uakari, bloody mary, intermarry, tom and jerry, calamari, lavaliere, unsavoury, winter cherry, petit jury, sour cherry, special jury, inventory, petty jury, beriberi

5 syllables:
barbados cherry, devanagari, detective story, memento mori, blue ribbon jury, shaggy dog story, kinetic theory, atomic theory

6 syllables:
maraschino cherry, information theory, economic theory, jerusalem cherry

7 syllables:
probability theory, articulated lorry