endeavorUS
tryI'll try to call her again.
attemptI have never attempted to run a marathon.
seekformalThey sought to reassure the public.
battleHe was battling to fix the roof in the rain.
striveWith limited resources, they are striving to make the school a better one.
struggleI've been struggling to understand this article all afternoon.
go to great lengthsShe knew that her parents would go to great lengths to see that she got a good education.