gradual

1 - Constitutional reform is a gradual process.

2 - If you suffer a work-related gradual process, disease or infection, see a health professional as soon as possible

3 - Some changes in technology occur gradually over a long period, others are brought about more rapidly.

4 - We are gradually changing over to a completely metric system.

5 - The city of Singapore was not built up gradually, as most cities are, by the development of commerce on the banks of some river, or on the crossroads of old trade routes.