1) Accurate
*Be accurate in doing sth
We need accurate information about the project.
2) Ambiguous
The election result was ambiguous.
He gave an ambiguous answer.
3) Eliminate
*Eliminate sth from sth
We should eliminate fatty food from our diet.
4) Extend
We tend to extend our house.
He needs to extend his visa.
5) Participate
* participate in sth
He never participates in any of our discussions.