An Outsider, an Unexpectedly Successful Candidate
This page is the CodyCross answer for the clue below from Taking Care of Our Planet, Group 1577, Puzzle 4 (Car Emissions).
Question is: An Outsider, an Unexpectedly Successful Candidate
and the answer is: DARKHORSE
Word Meaning:
DARKHORSE — Having the character of a dark horse.
Definitions from Wiktionary.