List of 20-letter words beginning with

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There are 135 twenty-letter words beginning with O

oak␣processionary␣moth  object␣adapter␣pattern  object-based␣languages  objective␣correlative  object␣request␣brokers  oblique␣illuminations  obscurum␣per␣obscurius  obstruction␣of␣justice  obtuse-angled␣triangle  occipitoatlantoaxial  occupational␣diseases  oceanic␣whitetip␣shark  octadecafluorooctane  octadecatetraenoates  octadecatrienoic␣acid  octahydrocurcuminoid  octanoyltransferases  octylisothiazolinone  oculomandibulofacial  oesophagogastroscopy  oesophagogastrostomy  oesophagojejunostomy  offer␣one's␣condolences  off␣the␣face␣of␣the␣earth  of␣Koranic␣proportions  oh␣my␣goodness␣gracious  oil␣of␣lemon␣eucalyptus  Okinawan␣purple␣potato  Old␣Earth␣creationists  Olde␣English␣Bulldogge  older␣than␣the␣Pyramids  oligacanthorhynchids  oligocellosaccharide  oligochromatographic  oligodendrogliopathy  oligodeoxynucleotide  oligodeoxythymidines  oligodesoxythymidine  oligoglucosaccharide  oligomannosaccharide  oligopseudorotaxanes  oligoribonucleotides  olive␣ridley␣sea␣turtle  olive-sided␣flycatcher  olivopontocerebellar  Olympic␣village␣effect  one␣could␣hear␣a␣pin␣drop  one␣country,␣two␣systems  one-day␣internationals  one-eyed␣trouser␣snakes  one-hundred-year␣storms  one's␣heart␣in␣one's␣mouth  one␣strike␣and␣you're␣out  one␣thing␣after␣another  one␣thing␣led␣to␣another  only␣a␣mother␣could␣love  on␣the␣horns␣of␣a␣dilemma  on␣the␣side␣of␣the␣angels  on␣the␣tip␣of␣one's␣tongue  ontological␣arguments  onychoosteodysplasia  oophorosalpingectomy  opened␣a␣can␣of␣whoop␣ass  open␣feedwater␣heaters  opening␣the␣floodgates  open␣up␣a␣can␣of␣whoop␣ass  operationalisability  operationalizability  ophthalmia␣neonatorum  ophthalmodynamometer  ophthalmodynamometry  opportunity␣servicing  optimization␣problems  orange␣blister␣beetles  orange␣staff␣sergeants  orbital␣quantum␣number  ordinate␣dimensioning  organic␣brain␣syndrome  organic␣intellectuals  organisational␣charts  organizational␣charts  organizational␣crimes  organofunctionalized  organomineralization  organopolymerization  organothiophosphates  orientating␣responses  origamic␣architecture  original␣aspect␣ratios  orthochromatophillic  orthocomplementation  Orthodox␣Christianity  orthogonal␣complement  orthographic␣neighbor  orthonormal␣functions  orthorhombic␣pyroxene  orthoroentgenography  orthotransplantation  oscillatory␣reactions  ostensive␣definitions  osteoabsorptiometric  osteochondroplasties  osteochondrosarcomas  osteodifferentiation  osteoimmunopathology  os␣trochleare␣calcanei  other␣backward␣classes  other␣side␣of␣the␣tracks  otorhinolaryngologic  Ousterhout's␣dichotomy  out-of-body␣experiences  Out␣of␣India␣hypothesis  out-paramoured␣the␣Turk  ovariohysterectomies  overcollectivization  overcompartmentalize  over-egging␣the␣pudding  overenthusiastically  overhead␣transparency  overimmunosuppressed

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See this list for:

• Scrabble in English: no word
• French Wiktionary: 134 words
• Spanish Wiktionary: 6 words
• Italian Wiktionary: 5 words
• German Wiktionary: 84 words
• Portuguese Wiktionary: 7 words
• Dutch Wiktionary: 187 words

Recommended websites

• Visit www.BestWordList.com - to create word lists for scrabble.
• Visit www.BestWordClub.com - to play scrabble duplicate online.

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