have second thoughts

idiomatic

(idiomatic) To change one's opinion, or be uneasy about a previous decision.

Japanese Meaning

再考する / 考え直す / 以前の決定に対し不安を抱く

After seeing the repair estimate, I began to have second thoughts about buying the old car.

修理見積もりを見て、中古車を買うことを考え直し始めた。

Sense（1）

(idiomatic) To change one's opinion, or be uneasy about a previous decision.

At first it seemed a good idea, but now it's getting close I'm having second thoughts.

has second thoughts

（ present singular third-person ）

having second thoughts

（ participle present ）

had second thoughts

（ participle past ）

had second thoughts

（ past ）