Spelling the sound [ ]

The spelling of a sound may be influenced by several factors:

  •   syllable structure: open or closed
  •   environment
  •   the position of the sound within a word: initial, middle, final
  •   a combination of two or more of the above

Conversely, how letters and letter groupings are pronounced may depend on different
factors:
  •   syllable structure: open or closed
  •   environment
  •   the position of the letter within a word: initial, middle, final
  •   a combination of two or more of the above

How to spell it?

For the sound [ ], spelling is based on environment.

The sound [ ] is represented by the combination of the vowel o and a nasal consonant:
  •   on: most of the times             bon, maison, montrer
  •   om: before b, m, p             compter, combinaison, bombe
            (most notable exceptions: bonbon, néanmoins)