unheroic
Examples
His decision to flee the scene was undeniably unheroic, leaving his companions to face the danger alone.
The protagonist's unheroic struggle with his own insecurities made him a more relatable character.
It was an unheroic end to a long career, marked by petty squabbles rather than grand achievements.
Synonyms
cowardly timid pusillanimous craven spineless fearful faint-hearted