プログレッシブ和英中辞典(第4版)の解説
ひるむ【×怯む】
〔恐れて身を縮める〕flinch ((from)),shrink ((away, back, from));〔気力がくじける〕quail ((at, before))
強盗のナイフに彼は一瞬ひるんだ
He flinched [shrank] for a moment at the sight of the robber's knife.
任務の重さに彼はひるんだ
He quailed at the responsibility involved in the job.
ひるむことなく率直に意見した
Without any hesitation, she gave him a frank talking-to.