Words that contain 'os' and end in 'ht'

Overall there are 4 entries possible for words that contain 'os' and end in 'ht'.

9 letter words

  • autosight

10 letter words

  • costraight
  • crosslight

13 letter words

  • noncostraight

In total, how many words are possible to make using this list?
Altogether, there are 4 words.

Which word on this page consists the highest number of letters?
The longest word is 13 letters long, which is 'noncostraight'.