na-adjective, noun
chicken-hearted; cowardly
Colloquial loanword describing someone who is timid or easily scared. Often used in casual, sometimes self-deprecating contexts.
彼はチキンハートだから、ホラー映画は絶対に見ない。
He's chicken-hearted, so he never watches horror movies.
告白する勇気が出ないなんて、自分がチキンハートに思える。
Not having the courage to confess makes me feel like a coward.