fumbling, groping (in the dark), trial and error, working by feel

💡 Nuance & Usage: Literally means 'feeling by hand'. Figuratively, it refers to exploring an unknown situation or solving a problem without clear guidance, often through trial and error. 暗闇の中で手で触って探す物理的な行為から、未知の状況で手探りで進む、試行錯誤しながら物事を進める様子を指します。明確な方法がない場合に使われます。