Is there a noun to describe a person who perseveres? I suppose a survivor is one who has survived difficult circumstances, and a soldier could be one that soldiers on, but neither word has quite the right connotation. I want the sense of "continue in a course of action even in the face of difficulty" without necessarily calling to mind images of trauma or war.
I think the best slang term I can think of is trooper.
Anyone who exhibits EXTREME perseverence, fortitude, and tenacity.
- Bill has had cancer 4 times and is still in great shape, he's such a trooper.
Note: As Gnawme indicated in the comments trouper is an alternative spelling.
I also offer stoic, as it is someone who perseveres and does so without complaining.
noun noun: stoic; plural noun: stoics; noun: Stoic; plural noun: Stoics
- a person who can endure pain or hardship without showing their feelings or complaining.
And since I cannot resist on using sports terms for everything. If this person were playing football, soccer, baseball, basketball, and they went through a lot of hardships and injuries yet still played on through everything they might be called a gamer.
Usage: Bob has a pulled hamstring and a beat up foot but he has played the last 3 days, he such a gamer.
Persevering with something despite setbacks
he was undeterred by these disasters
You can check the synonyms also. I would also add that adjectives are better for this context.
Apparently, perseverer is a word and a noun, though it is not that common.
one that perseveres : a persistent person
From the book "The Great Awakening: A Buddhist Social Theory" By David Loy:
Each Tibetan knew that the moral Buddhist cared more for the welfare of others more than his or her own welfare, gave others rather than amassed a fortune, rigorously tried to prevent harm to others, never engaged in any of the nonvirtuous acts, had complete devotion to the Buddha and his path, worked to eliminate anger and desire for material goods, accepted problems with patience and endurance, and remained an enthusiastic perseverer in the quest for truth and enlightenment.
Also endurer as a noun:
One who, or that which, endures or lasts; one who bears, suffers, or sustains.
From "Don Quixote" by Cervantes, Miguel:
Humble with the proud, haughty with the humble, encounterer of dangers, endurer of outrages, enamoured without reason, imitator of the good, scourge of the wicked, enemy of the mean, in short, knight-errant, which is all that can be said!
Stubbornly refusing to change one’s opinion or course of action:
I argued this point with him, but he was obdurate
You might also refer to a mountain as 'obdurate' as it exists essentially unchanged regardless of weather and humanity. So further to its innate meaning, similes like, 'he is obdurate as the mountain' can be constructed in the semantic direction you seek.
edit: didn't see that you wanted a noun specifically, so:
Adamant/Adamance/Adamancy Stemming from adamas latin for invincible, untameable.
Refusing to be persuaded or to change one’s mind
determined: strongly motivated to succeed (undismayed, undaunted, single-minded).
John Kerry tells Israeli TV he will get the Israeli-Palestinian peace deal done. He is determined.
For nouns, there are warrior, hero, and champion.
A perseverant person/endeavour/effort.
per·se·ver·ant adjective -nt\
able or willing to persevere : enduring Origin of PERSEVERANT
Middle English perseveraunt, from Middle French perseverant, from Latin perseverant-, perseverans, present participle of perseverare
Someone with stick-to-itiveness is called a sticker. From the OED:
Sticker 3a.) One who or something which adheres or remains attached; one who remains constant; one who persists in a task. Const. to, †unto.
and two examples of usage, also from the OED:
1967 ‘C. Fremlin’ Prisoner's Base xii. 84 Daphne did not believe in dropping things; she was, as she would have told you, a Sticker.
1979 N. Hynd False Flags viii. 71 Bobby wasn't any quitter. He was a sticker.