捉え所の無い

(1)making great mental demands; hard to comprehend or solve or believe; "a baffling problem"; "I faced the knotty problem of what to have for breakfast"; "a problematic situation at home"

(2)大きな精神的な要求を行うさま

(3)理解する、解決する、あるいは信じることが難しい

(1)