to falter; to flinch (from); to recoil (from); to quail (at); to be intimidated; to feel daunted; to be discouraged; to hesitate
厳しい批判に彼は怯まなかった。
He did not flinch at the harsh criticism.
相手の迫力に一瞬怯んでしまった。
I faltered for a moment at the opponent's presence.
困難に怯むことなく前進する姿勢を見せた。
She showed an attitude of moving forward without flinching at difficulties.