This is the 14665th most frequent German word.
mutiger
"Mutiger" means "braver" or "more courageous" in English.
Here, "mutigere" is the comparative form of "mutig" modifying the noun "Entscheidung" (decision), explaining that an alternate decision could have shown greater courage.
Eine mutigere Entscheidung hätte mehr Risiken beinhaltet.
A braver decision would have involved more risks.
The word "mutiger" is used as a comparative form of "mutig" (brave), indicating that the person's bravery increased in the given situation.
Er wurde mutiger, als er die Herausforderung annahm.
He became braver when he accepted the challenge.
In this sentence, "mutigeres" is the neuter comparative form of "mutig" describing "Herz" (heart), indicating the heightened courage required for the action described.