pro tem - PRO-TEM - (short for "pro tempore") - for the time being
Eample: "The first applicant was hired pro tem, to be employed until a more qualified applicant came along."
As a starter: and as a former teacher in English, I hope to add to reader's vocabulary by presenting a word a day in simple terms that anyone can understand - from current use in publications, radio,TV, etc. Remember: use a new word three times in a day and it's yours forever!