Words with 'o' as the first letter that end with 'um'


There are well over 100 words available, so you are sure to uncover the perfect words that start with 'o' and end with 'um' !

4 letter words

  • odum
  • ogum
  • ovum

5 letter words

  • oakum
  • odeum
  • odium
  • oleum
  • onium
  • opium
  • otium

6 letter words

  • oarium
  • ocimum
  • oidium
  • omasum
  • omnium
  • osmium
  • ostium
  • outsum
  • ovulum

7 letter words

  • oestrum
  • offscum
  • ogonium
  • omentum
  • ooecium
  • opossum
  • oppidum
  • optimum
  • orarium
  • organum
  • orpheum
  • osculum
  • otidium
  • otozoum
  • outswum
  • ovarium
  • oversum
  • oxonium
  • ozonium

8 letter words

  • olibanum
  • olpidium
  • ommateum
  • omoideum
  • oncidium
  • onychium
  • ooangium
  • oogonium
  • ophidium
  • oppossum
  • opsonium
  • oraculum
  • ordalium
  • origanum
  • orontium
  • ossarium
  • ostracum
  • oviculum

9 letter words

  • obligatum
  • obsequium
  • omentulum
  • onchidium
  • operculum
  • opusculum
  • oratorium
  • ossiculum
  • ossuarium
  • otoconium
  • ovogonium
  • oxygenium

10 letter words

  • oceanarium
  • octavarium
  • oedogonium
  • ommatidium
  • omosternum
  • onosmodium
  • opprobrium
  • orichalcum
  • osmaterium
  • osmeterium
  • osmiridium
  • osphradium
  • otocranium
  • oxycalcium
  • oxydendrum

11 letter words

  • observandum
  • omphalodium
  • oophoridium
  • opobalsamum
  • organistrum
  • ostensorium

12 letter words

  • onohippidium
  • oosporangium
  • ophioglossum
  • organosodium
  • ornithogalum
  • osteocranium
  • osteoglossum

13 letter words

  • odontoglossum
  • oleosaccharum
  • organolithium

14 letter words

  • organochordium

15 letter words

  • oesophagostomum
  • opthalmophorium
  • organomagnesium

What's a strange word from all the word combinations possible ?
One of the most interesting words from this page is 'odeum'. The traditional definition of 'odeum' is as follows: "See Odeon.". Credit to the Oxford Dictionary.

What is the highest number of points you could get in Scrabble from this list of words that start with 'o' and end with 'um'?
With a considerable 103 entries, it's best to go for 'onychium' scoring 18 points.

Which word that starts with 'o' and ends with 'um' is the most common word?
A well-known word for the combination you searched is 'opium'.

Which word in particular from this list contains the highest number of characters?
'Oesophagostomum' is made up of 15 characters, and is the longest word one could make from the combination searched for.

What is the total number of words one can put together using this list?
103!