chickening

/ˈtʃɪkənɪŋ/
verb
  1. Present participle of chicken; to lose courage or decide not to do something because of fear.
    • Stop chickening and just tell her the truth.
    • He's chickening at the last minute again.
    • She kept chickening out of the bungee jump.
What does "chickening" mean? | whatsthatwordmean | whatsthatwordmean