bigendeavor
nounUK /ˌbɪɡ ɪnˈdev.ər/
US /ˌbɪɡ ɪnˈdev.ɚ/
A big, important job that someone tries hard to do.
Building the treehouse was a bigendeavor that took the whole summer.
OTHER MEANINGS
2. A very large attempt to do something difficult.
Cleaning the whole garage was a bigendeavor for the family.
3. A big plan that needs lots of work and time.
Her bigendeavor was to plant a garden across the entire yard.
4. A huge job that many people work on together.
The school play was a bigendeavor with actors, costumes, and songs.