what's a similie used for being determined, or persistant?

Question

^--thats what i need to know =)

Answer 1

Similes make use of the words "like" or "as" to describe something. Some examples that I've seen/used are:
--as blind as a bat
--as hot as hell
--as tough as nails
--my heart is like an open highway (Bon Jovi song)
--like a bat out of hell (Meatloaf)

Anyway, not sure if this will help, but check out the link below:

Answer 2

Assiduous or pertinacious

Answer 3

perseverant