Time-consuming (adjective)

1. Requiring a lot of time to do or complete.
2. Characterized by taking a lot of time or effort.

Origin:

Derived from the combination of the words "time" meaning "a point in time" and "consuming" meaning "taking a lot of time or effort".

Examples:

1. The project was time-consuming.
2. The process was time-consuming and tedious.
3. The task was time-consuming but necessary.
4. The research was time-consuming but worth it.
5. The paperwork was time-consuming but it had to be done.