13-Letter Words Starting With O
Our word finder knows 306 thirteen-letter words that start with O. Common picks such as OPPORTUNITIES, ORGANIZATIONS, ORGANISATIONS lead the list, which makes it faster to spot the word your puzzle is hiding.
Words are ordered by usage frequency in a trillion-word English corpus, which is the closest thing to "most likely answer first" that a word list can offer.
Most common
- opportunities17
- organizations23
- organisations14
- objectionable26
- ophthalmology27
- optimizations26
- observational18
- opportunistic19
- oceanographic23
- obstetricians17
- observatories18
- orchestration18
- operationally18
- oscilloscopes19
- ornamentation15
- overestimated19
- orthodontists17
- osteomyelitis18
- orchestrating19
- orthogonality20
All 306 words (the small number on each word is its Scrabble point value)
- outperforming 21
- observability 23
- officeholders 25
- overstatement 18
- overwintering 20
- outstandingly 18
- organogenesis 15
- optimisations 17
- oropharyngeal 22
- overshadowing 24
- overestimates 18
- overabundance 21
- oceanographer 21
- ornithologist 17
- orientational 13
- oystercatcher 23
- overstretched 22
- overconfident 22
- overpopulated 21
- overdeveloped 23
- overprotected 21
- oligopolistic 18
- ontologically 19
- overvaluation 19
- overemphasize 32
- offensiveness 22
- oversaturated 17
- overqualified 29
- oversensitive 19
- overburdening 20
- overachieving 25
- obliviousness 18
- outspokenness 19
- outmaneuvered 19
- overproducing 22
- overexploited 26
- oxyhemoglobin 31
- overachievers 24
- obsessiveness 18
- octogenarians 16
- objectionably 29
- objectiveness 27
- objectivistic 29
- objectivities 27
- obliquenesses 24
- obliterations 15
- obnoxiousness 22
- obnubilations 17
- obscurantisms 19
- obscurantists 17
- obscurenesses 17
- obsessionally 18
- obsolescences 19
- obsolescently 20
- obstetrically 20
- obstinateness 15
- obstructively 23
- obtainability 20
- obtrusiveness 18
- obviousnesses 18
- occidentalize 27
- oceanologists 16
- ochlocratical 22
- octodecillion 18
- octosyllabics 22
- octosyllables 20
- odontoblastic 18
- odontoglossum 17
- odoriferously 20
- odorousnesses 14
- offhandedness 24
- officiousness 21
- oleandomycins 21
- oleomargarine 16
- olfactometers 20
- ombudsmanship 25
- ominousnesses 15
- omnicompetent 21
- omnipresences 19
- oneiromancies 17
- onerousnesses 13
- ongoingnesses 15
- onomastically 20
- onomasticians 17
- onomatologies 16
- onomatologist 16
- onomatopoeias 17
- onomatopoetic 19
- onychophorans 26
- openabilities 17
- openheartedly 22
- openmouthedly 24
- operabilities 17
- operationisms 17
- operationists 15
- operativeness 18
- operosenesses 15
- opinionatedly 19
- opisthobranch 25
- opportuneness 17
- oppositionist 17
- opprobriously 22
- optionalities 15
- oracularities 15
- orchestraters 18
- orchestrators 18
- orderlinesses 14
- organogeneses 15
- organogenetic 17
- orgiastically 19
- orientalizing 23
- orienteerings 14
- originalities 14
- originatively 20
- orismological 18
- ornithischian 21
- ornithologies 17
- orthoepically 23
- orthogonalize 26
- orthographies 22
- orthopterists 18
- orthopteroids 19
- oscillational 15
- oscillographs 21
- oscillography 24
- oscilloscopic 21
- ossifications 18
- osteomalacias 17
- osteoplasties 15
- osteosarcomas 17
- ototoxicities 22
- outbargaining 17
- outdelivering 18
- outdistancing 17
- outgeneraling 15
- outglittering 15
- outintriguing 15
- outmanipulate 17
- outorganizing 24
- outplacements 19
- outpoliticked 22
- outpopulating 18
- outrebounding 17
- outreproduced 19
- outreproduces 18
- outstretching 19
- outtravelling 17
- outwardnesses 17
- ovariectomies 20
- overabstracts 20
- overadvertise 20
- overambitious 20
- overamplified 24
- overanalyzing 29
- overanxieties 23
- overarranging 18
- overasserting 17
- overassertion 16
- overassertive 19
- overattention 16
- overbalancing 21
- overbearingly 22
- overbejeweled 29
- overbleaching 24
- overborrowing 22
- overbreathing 22
- overcautioned 19
- overcivilized 31
- overcommitted 23
- overconcerned 21
- overconscious 20
- overconstruct 20
- overconsuming 21
- overcorrected 21
- overcredulous 19
- overdecorated 20
- overdecorates 19
- overdemanding 21
- overdependent 20
- overdesigning 19
- overdirecting 20
- overdiscounts 19
- overdiversity 23
- overdocuments 21
- overdominance 21
- overdramatize 28
- overeagerness 17
- overeducating 20
- overeducation 19
- overelaborate 18
- overembellish 23
- overemotional 18
- overencourage 19
- overenergetic 19
- overengineers 17
- overexercised 26
- overexercises 25
- overexertions 23
- overexpanding 27
- overexpansion 25
- overexplained 26
- overexposures 25
- overextending 25
- overextension 23
- overexuberant 25
- overfertilize 28
- overfocussing 22
- overfulfilled 23
- overglamorize 28
- overgoverning 21
- overharvested 23
- overidealized 27
- overidealizes 26
- overimpressed 21
- overimpresses 20
- overindulgent 18
- overindulging 19
- overinflating 20
- overinflation 19
- overinforming 22
- overingenious 17
- overingenuity 20
- overinsistent 16
- overintensity 19
- overissuances 18
- overlengthens 20
- overlordships 22
- overmastering 19
- overmedicated 22
- overmedicates 21
- overmodulated 20
- overnourished 20
- overnourishes 19
- overnutrition 16
- overoperating 19
- overoptimisms 22
- overoptimists 20
- overorganized 27
- overorganizes 26
- overornaments 18
- overpackaging 26
- overpedalling 20
- overpersuaded 20
- overpersuades 19
- overpopulates 20
- overprescribe 22
- overpressures 18
- overprocessed 21
- overprocesses 20
- overprogramed 22
- overpromising 21
- overpromoting 21
- overreactions 18
- overregulated 18
- overregulates 17
- overreliances 18
- overreporting 19
- overresponded 20
- oversaturates 16
- oversecretion 18
- overseriously 19
- overservicing 22
- overslaughing 21
- overspeculate 20
- overspreading 20
- overstability 21
- overstimulate 18
- overstraining 17
- overstressing 17
- overstretches 21
- oversubscribe 22
- oversupplying 24
- oversweetened 20
- oversweetness 19
- overtalkative 23
- overtaxations 23
- overtightened 21
- overtreatment 18
- overutilizing 26
- overweeningly 23
- overweighting 24
- overwithholds 26
- overzealously 28
- ovipositional 18
- ovoviviparous 24
- oxaloacetates 22
Points use Scrabble US letter values
Frequently asked questions
How many thirteen-letter words are there that start with O?
There are 306 thirteen-letter words that start with O in the tournament word lists. The most common are OPPORTUNITIES, ORGANIZATIONS, ORGANISATIONS.
What are common thirteen-letter words that start with O?
OPPORTUNITIES, ORGANIZATIONS, ORGANISATIONS, OBJECTIONABLE, OPHTHALMOLOGY are the most frequently used. The full list of 306 words on this page is sorted by everyday frequency, so the common ones come first.
Can I play these words in Scrabble?
Yes. The list combines ENABLE and the North American tournament list (TWL), so these words are playable in Scrabble-style games, including Words With Friends.
Starting with O in other lengths
- 2-Letter Words Starting With O
- 3-Letter Words Starting With O
- 4-Letter Words Starting With O
- 5-Letter Words Starting With O
- 6-Letter Words Starting With O
- 7-Letter Words Starting With O
- 8-Letter Words Starting With O
- 9-Letter Words Starting With O
- 10-Letter Words Starting With O
- 11-Letter Words Starting With O
- 12-Letter Words Starting With O
- 14-Letter Words Starting With O
- 15-Letter Words Starting With O
- 16-Letter Words Starting With O
- 17-Letter Words Starting With O
- 18-Letter Words Starting With O
- 19-Letter Words Starting With O
- 20-Letter Words Starting With O