conscientious
This essay is a most conscientious piece of work.
consolidate
As we all know, too many countries lapse back into violence when efforts to consolidate peace or create stability are weak.
consultancy
Software, consultancy and mobile telephones use far less oil than steel or car production.
contrive
After much difficulty, I contrived to pull the boat onto the beach.
converge
Capitalism and socialism will not eventually converge.
decisive
Your English proficiency is the decisive factor in getting the job.
deduce
You will notice water rising in the tube, now what do you deduce from that?
deem
He deemed that it was his duty to help.
deprive
It is absolutely unfair that these children are deprived of the rights to receive education.