Constructive forces are generally slow.
gradual
No, a mudslide is not a constructive force. It is a destructive force that can cause significant damage to land and property. Mudslides usually occur when heavy rainfall causes the rapid downhill movement of saturated soil and rock.
the answer is Suddenly, all at once.
rapid Or possibly "steep."
Rapid Action Force was created in 1992.
Finnish Rapid Deployment Force was created in 1996.
very rapid
The motto of Finnish Rapid Deployment Force is 'Look good, do good'.
Earthquakes typically occur suddenly and quickly, with the actual shaking or trembling lasting only minutes. However, the build-up of stress along fault lines that leads to an earthquake can take decades or even centuries.
Creep is a slow, continuous mass movement of soil or rock down a slope. It involves a gradual downhill movement of materials due to the force of gravity. It is not considered a rapid mass movement like landslides or debris flows.
The opposite would be sudden or abrupt, so the word could be quick, rapid, or swift.
the process of growing quickly