quamdiu

Etymology
Compound of +

Adverb

 * 1) how long
 * 2) * Seneca Minor, Epistulae Morales ad Lucilium, Epistle CI
 * Quam bene vivas, non quamdiu.
 * How well you live, not how long.
 * 1) as long as, until, during
 * 1) as long as, until, during