Scrabble US 13-Letter Words Starting with O

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13-Letter Words

objectionable26 objectionably29 objectiveness27 objectivistic29 objectivities27 obliquenesses24 obliterations15 obliviousness18 obnoxiousness22 obnubilations17 obscurantisms19 obscurantists17 obscurenesses17 observability23 observational18 observatories18 obsessionally18 obsessiveness18 obsolescences19 obsolescently20 obstetrically20 obstetricians17 obstinateness15 obtainability20 obtrusiveness18 obviousnesses18 occidentalize27 oceanographer21 oceanographic23 oceanologists16 ochlocratical22 octodecillion18 octogenarians16 octosyllabics22 octosyllables20 odontoblastic18 odontoglossum17 odoriferously20 odorousnesses14 offensiveness22 offhandedness24 officeholders25 officiousness21 oleandomycins21 oleomargarine16 olfactometers20 oligopolistic18 ombudsmanship25 ominousnesses15 omnicompetent21 omnipresences19 oneiromancies17 onerousnesses13 ongoingnesses15 onomastically20 onomasticians17 onomatologies16 onomatologist16 onomatopoeias17 onomatopoetic19 ontologically19 onychophorans26 openabilities17 openheartedly22 openmouthedly24 operabilities17 operationally18 operationisms17 operationists15 operativeness18 operosenesses15 ophthalmology27 opinionatedly19 opisthobranch25 opportuneness17 opportunistic19 opportunities17 oppositionist17 opprobriously22 optimisations17 optimizations26 optionalities15 oracularities15 orchestraters18 orchestrating19 orchestration18 orchestrators18 orderlinesses14 organisations14 organizations23 organogeneses15 organogenesis15 organogenetic17 orgiastically19 orientalizing23 orientational13 orienteerings14 originalities14 originatively20 orismological18

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

32

33

31

33

31

35

29

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34

29

33

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33

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31

28

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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 301 13-letter words starting with O in the Scrabble dictionary.

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