プログレッシブ和英中辞典(第4版)の解説
ひとしれぬ【人知れぬ】
人知れぬ苦労
((have; experience; suffer)) hardships unknown to others [other people]/〔精神的な〕inward trouble;spiritual trials and tribulations
日本語の解説|人知れぬとは
人知れぬ苦労
((have; experience; suffer)) hardships unknown to others [other people]/〔精神的な〕inward trouble;spiritual trials and tribulations