Their endeavours to find a cure for the disease were relentless.

She always endeavours to do her best in everything she does.

She made a great endeavour to finish the project on time.

She will endeavour to complete the project on time.

He endeavoured to find a solution to the problem.

She is endeavouring to learn a new language.

She is endeavouring to improve her skills.

His endeavourment to succeed in his career is truly inspiring.

Their endeavourings have led to great success.

She has made many endeavourments in her career.