試こころみにMeanings1adverbas a test; tentatively; on a trial basisUsed when trying something out to see what happens, without a firm commitment. Often appears with verbs like やってみる or 使ってみる.試こころみに新あたらしい方ほう法ほうでやってみた。I tried doing it the new way as a test.試こころみにこのアプリを使つかってみてください。Please try using this app on a trial basis.