Untimely (adjective)

Not occurring at a suitable or appropriate time; untimely.

Origin:

From un- (not) + timely (occurring at a suitable or appropriate time).

Examples:

1. His death was untimely and a great loss to the community.
2. The storm hit at an untimely moment and caused severe damage.
3. The news of the scandal broke at an untimely moment and caused a lot of damage.
4. The injury was untimely and he couldn't play in the final match.
5. The failure of the machine was untimely and caused a lot of inconvenience.