かんがえごと
かんがえごと 【考え事 】〖考える事柄 〗something to think about ; 〖心配事 〗a worry .▸ 考え事をする think ⦅about ⦆.▸ 考え事にふける be in deep thought / be lost [absorbed ] in thought / think hard ⦅about ⦆.