3 letters:
nur, uhr

4 letters:
boor, buhr, cour, cure, foor, fuhr, jure, luhr, lure, moor, muhr, muir, pure, ruhr, suhr, sure, tour, ture, your

5 letters:
adure, alure, amjur, amure, apure, assur, atour, babur, bijur, bloor, dtour, duerr, epure, esure, fluhr, gloor, hosur, impur, inure, matur, moore, mosur, neur-, pleur, segur, shure, smoor, spoor, stoor, stour, stuhr, sture, stuur, suhre, suhur, suire, tirur, toure, unnur, youre

6 letters:
abjure, adjure, allure, assure, autour, bacoor, badour, baldur, bavure, cesure, conure, damour, demure, depure, detour, dufour, emmure, endure, enmure, ensure, exmoor, fitoor, fixure, impoor, impure, insure, kannur, kasoor, kayyur, kovvur, kronur, lacour, latour, lesure, licour, lumpur, majoor, manure, masoor, mature, mercur, natuur, objure, obscur, pleur-, putour, rampur, recure, retour, rigour, schuur, secure, seguir, silure, tambur, tellur, unmoor, unpure, unsure, vamure, vigour, wavure, you're, zaccur, zonure

7 letters:
amatuer, amchoor, ampleur, aufruhr, batture, beladur, bestuur, biopure, bonjour, brulure, clojure, contour, coonoor, coulure, coupure, couture, dasyure, de jure, discure, dortour, ecotour, eieruhr, epicure, faitour, faytour, flatour, flexure, foulure, gestour, gilmour, gravure, guipure, gymnure, hachure, isildur, jabbour, kangyur, kantoor, khempur, lancour, langour, lungoor, mansoor, montour, monture, morsure, nervure, obscure, on tour, orasure, outdure, panmure, parkour, pitcure, plexure, precure, procure, purpure, rancour, rednour, riotour, sangrur, santoor, santour, schnoor, shabnur, soilure, stamour, succour, suntour, terrour, tonsure, vaimure, vautour, wafture, waivure, wintour

8 letters:
achatour, alentour, amanpour, annexure, assecure, atribuir, avontuur, belamour, brochure, coiffure, coinsure, countour, dartmoor, detruire, disinure, doublure, dressuur, dry-cure, dunsmoor, dunsmuir, edgemoor, elaphure, encolure, f-secure, footsure, for sure, gochnour, halfhour, haraldur, hatchure, immature, kohinoor, lakemoor, langmuir, lettrure, limitour, markhoor, melanure, melocure, monamour, oversure, painture, paramour, perambur, pot-sure, reassure, reinsure, rossmoor, shoranur, sinecure, stromuhr, tainture, tournure, tovshuur, tubulure, udhampur, unsecure

9 letters:
avauntour, berhampur, bikrampur, blackmoor, bosselure, brachyure, broadmoor, cannelure, chapelure, chevelure, climature, confixure, creedmoor, deflexure, demeanure, disinsure, duty tour, expansure, fermeture, fire-cure, floramour, flossmoor, flue-cure, foliature, hawksmoor, holothure, if you're, inflexure, intermure, lakhimpur, madripoor, make pure, make sure, miniature, nieuwsuur, palmature, premature, quoiffure, rest-cure, sedgemoor, serrature, sursanure, surveyour, thanjavur, trajetour, tregetour, ultrapure, vauntmure

10 letters:
bananamour, basse-cour, blackamoor, colorature, concreture, contramure, craquelure, crydamoure, debouchure, discardure, disparlure, embouchure, ettumanoor, exploiture, faith cure, grand tour, kirriemuir, koh-i-noor, kolbermoor, maya moore, middle-ear, paradoxure, pimplapure, quoifffure, reproduire, rhine-ruhr, simon-pure, spennymoor, to be sure, tweedsmuir

11 letters:
anil kapoor, candidature, corporature, countermure, enantiopure, fail-secure, indya moore, observateur, outparamour, pretty cure, pure-impure, pyrogravure, rotogravure, self-insure, sheriffmuir, supersedure, that you're, treachetour, uthiramerur, what you're

12 letters:
arjun kapoor, conservateur, daria-i-noor, darya-i-noor, entrepreneur, green manure, heliogravure, kuala lumpur, makedamnsure, marston moor, photogravure, rajiv kapoor, recomforture, rishi kapoor, shemar moore, somatopleure, sonam kapoor, subminiature

13 letters:
2021 atp tour, 2021 wta tour, carissa moore, clair-obscure, clare-obscure, clayton moore, david gilmour, fantin-latour, haute couture, janhvi kapoor, pitch contour, ranbir kapoor, shammi kapoor, shashi kapoor

14 letters:
bodinayakkanur, d-subminiature, karisma kapoor, mengenlehreuhr, randhir kapoor, ultraminiature

15 letters:
6.5mm creedmoor, daftendirektour, hella mega tour, shraddha kapoor, splanchnopleure

17 letters:
shipston-on-stour, trolls world tour

18 letters:
frances de la tour

20 letters:
candace cameron bure

22 letters:
battle of marston moor, holme-on-spalding-moor

24 letters:
2021 atp challenger tour

5 letters:
armor, ormer

6 letters:
armour, burner, corner, dormer, earner, farmer, firmer, former, garner, lerner, murmur, turner, warmer, warner, werner

7 letters:
charmer, learner, mourner

8 letters:
disarmer, informer, reformer

9 letters:
foreigner, performer, silberner

10 letters:
body armor, catacorner, gas burner, oil burner, ring armor

11 letters:
amen corner, baby farmer, body armour, catercorner, chain armor, food turner, plate armor, ring armour, transformer, tree farmer, wage earner

12 letters:
bench warmer, catty-corner, chain armour, dairy farmer, heart murmur, kitty-corner, pilot burner, plate armour, sixth-former, small farmer, stock farmer

13 letters:
snake charmer, street corner, suit of armor, tenant farmer

14 letters:
cardiac murmur, chimney corner, hole-in-corner, pancake turner, suit of armour

15 letters:
charcoal burner, hole-and-corner

19 letters:
cascade transformer