The key that is used does not rust. (Albanian proverb). At the narrow passage there is no brother and no friend. (Arabic proverb).
Definition of remiss. 1  1 : negligent in the performance of work or duty : careless. 2  2 : showing neglect or inattention : lax.
I believe that commis is French for assistant. A Commis is a trainee or assistant Chef and the first step on the ladder of Chef 'ranks'. Clearly, once a trainee Chef becomes qualified, s/he would then be addressed as a Commis Chef. Prior to qualification as a Chef, s/he would be just a trainee Chef.