Perseverance

per·se·ver·ance


noun

1. determined continuation with something: steady and continued action or belief, usually over a long period and especially despite difficulties or setbacks

verb [I] MAINLY APPROVING
to try to do or continue doing something in a determined way, despite having problems:

Per`se*ver"ance (?), n. [F. persévérance, L. perseverantia.]

1. The act of persevering; persistence in anything undertaken; continued pursuit or prosecution of any business, or enterprise begun.

firm in belief, determination, or adherence