疑ってた

doubted, was suspicious of

→ 疑う

疑っ doubt, suspect + て Te-form (conjunctive form) + た Past tense

verb · informal, past tense Rare #36,838

doubted, was suspicious of A conversational contraction of 疑っていた.

JA: 彼の話を疑ってた。

EN: I doubted his story.

Conjugation of 疑う

Indicative past

Of course I was suspicious, but...

— オープン・ユア・アイズ (1997)

Though he himself doubted it even existed.

— イノセンス (2004)

Were you doubting what I told you?

— フィールド・オブ・ドリームス (1989)

Were you suspicious?

— オープン・ユア・アイズ (1997)

I was just suspicious for no reason.

— 別れる決心 (2022)