Groping in the dark; searching for solutions or a way forward by trial and error when you have no clear clues.
新規事業の立ち上げでは、最初はどうしても暗中模索になりがちだ。
When starting a new business, you inevitably tend to grope in the dark at first.
研究チームは確かなデータがない中で暗中模索を続けた。
The research team continued to grope in the dark without reliable data.
政府の初動対応は暗中模索だったが、次第に方針が固まった。
The government's initial response was groping in the dark, but its policy gradually became clear.