Definition of striven:
(v) :
To try to achieve a result; to make strenuous effort; to try earnestly and persistently.
(v) :
To struggle in opposition; to be in contention or dispute; to contend; to contest.
(v) :
To vie; to compete as a rival.
(n) :
(obsolete) Alternative form of strife. [Striving; earnest endeavor; hard work.]