13-Letter Words Starting with O

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13-Letter Words

objectionable26 objectionably29 objectivating28 objectivation27 objectiveness27 objectivising28 objectivistic29 objectivities27 objectivizing37 obliquenesses24 obliterations15 obliviousness18 obliviscences22 obmutescences21 obnoxiousness22 obnubilations17 obscenenesses17 obscurantisms19 obscurantists17 obscurenesses17 observability23 observational18 observatories18 obsessionally18 obsessionists15 obsessiveness18 obsolescences19 obsolescently20 obstetrically20 obstetricians17 obstinateness15 obstreperated18 obstreperates17 obstructingly21 obstructional17 obstructively23 obtainability20 obtemperating20 obtrusiveness18 obviousnesses18 occasionalism19 occasionalist17 occasionality20 occidentalise18 occidentalism20 occidentalist18 occidentalize27 occlusiveness20 oceanographer21 oceanographic23 oceanological18 oceanologists16 ochlocratical22 ochlophobiacs27 octingenaries16 octocentenary20 octodecillion18 octogenarians16 octosyllabics22 octosyllables20 odonatologies15 odonatologist15 odontoblastic18 odontoglossum17 odontological17 odontologists15 odontophobias21 odontophorans19 odontophorous19 odontornithes17 odoriferously20 odorousnesses14 oecologically21 oecumenically22 offensiveness22 offhandedness24 officeholders25 officialities21 officiousness21 oleandomycins21 oleomargarine16 oleomargarins16 olfactologies19 olfactologist19 olfactometers20 oligopeptides19 oligopolistic18 oligospermias18 oligotrophies19 ombudsmanship25 ominousnesses15 ommatophorous22 omnicompetent21 omnifariously21 omniformities20 omnipotencies19 omnipresences19 omoplatoscopy24 oneirocritics17 oneiromancers17

The highest scoring 13-letter words starting with O

Want to go straight to the words that will get you the best score? Here are the highest scoring 13-letter words starting with O.

Word

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35

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29

FAQ on 13-letter words starting with O

What are the best Scrabble 13-letter words starting with O?

The highest scoring 13-letter word starting with O is overemphasize, worth 32 points.

Other high scorers: overcivilized oxyhemoglobin objectionably objectivistic overanalyzing

How many 13-letter words start with O?

There are 495 13-letter words starting with O in the Scrabble dictionary.

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13-Letter Words Starting with O. UnscrambleTheWord.co. unscrambletheword.co. 27 Feb. 2026, https://unscrambletheword.co/word-list/13-letter/starting-with/o.