だったろ

was ..., right?

→ だ
だっ Past copula + た Past tense + ろ Imperative
auxiliary · informal, past tense Rare #22,921
was ..., right? Casual; used to seek confirmation or agreement.
JA: 彼は前から友達だったろ?
EN: He was already a friend, right?
Conjugation of だ

とにかく無事だったろ?

At least you were okay, right?

— ANORA アノーラ (2024)

ーポーリーだったろ?

It was Paulie, wasn't it?

— ダーク・プレイス (2015)

撃たれても平気だったろ

You were fine even after getting shot, weren’t you?

— Carandiru (2003)

お前の隣のクラスだったろ

It was the class next to yours, wasn't it?

— オールド・ボーイ (2003)

ハーレムで撃ち合いをするとこだったろ?

You were about to get into a shootout in Harlem, right?

— マルコムX (1992)

砂漠の横断は大変だったろ?

Crossing the desert was tough, wasn’t it?

— 続・夕陽のガンマン (1966)

おまえもこいつを連れ出すつもりだったろ

You were planning to take this guy out too, weren't you?

— レザボア・ドッグス (1992)