言っとくわ

I'll tell them

→ 言う

phrase Rare #38,033

I'll tell them A casual contraction of 言っておくわ, meaning “I’ll tell them” or “I’ll make sure to mention it.” The sentence-ending わ gives a soft, often feminine tone in casual speech.

JA: そのことは先生に言っとくわ。

EN: I'll tell the teacher about it.

チャンさんご主人に私の炊飯器も頼んで言っとくわ

Chan, I’ll ask your husband to get my rice cooker too.

— 花様年華 (2000)

あたしうまいこと言っとくわ

I'll smooth things over.

— 生きる (1952)

言っとくわ

I’ll let them know.

— ファニーゲーム (1997)

（ケイ）一応お礼は言っとくわ

I guess I should at least thank you.

— AKIRA (1988)