on the up-and-up

Adjective

informal

(informal) Legitimate; honest; upright.

Japanese Meaning

正直な / 誠実な / 品行方正な

We need to verify that the loan application is on the up-and-up before approving it.

承認する前に、そのローン申請が正当なものかどうかを確認する必要がある。

Sense（1）

(informal) Legitimate; honest; upright.

Before paying any money, make sure the organization is on the up-and-up.