Belgium
doubler
Meaning
to repeat a school year
Elsewhere
redoubler
Explanation
France redoubles a year. Belgium, Switzerland and Canada drop the re- and simply double it.
Example
Elle a doublé sa première année de médecine, mais elle a réussi la suivante sans souci.
She repeated her first year of medicine, but sailed through the next one.
Origin
From the Latin duplare, to double.
Where
Belgium
Switzerland
Canada
Source