firstplan
nounUK /ˈfɜːstplæn/
US /ˈfɜːrstplæn/
The first plan is the very first idea you make for doing something.
Our firstplan was to go to the park, but then it rained.
OTHER MEANINGS
2. A rough early drawing or sketch made before the final one.
She drew a firstplan of the house before building it.
3. The first step in a set of steps for a project.
The firstplan is to gather all the materials.
4. A backup idea kept in case the main one fails.
If the trip is canceled, our firstplan is to stay home and play games.