Untimely

Un·time·ly

Untimely

a.
  1. Not timely; done or happening at an unnatural, unusual, or improper time; unseasonable; premature; inopportune; as, untimely frosts; untimely remarks; an untimely death.

Untimely

adv.
  1. Out of the natural or usual time; inopportunely; prematurely; unseasonably.