眠ってた

was sleeping, were sleeping

→ 眠る
眠っ sleep + Te-form (conjunctive) + Past tense
verb · imperfect indicative Rare #31,305
was sleeping, were sleeping Informal shortened form of 眠っていた.
JA: 昨日は疲れていて、早く眠ってた。
EN: I was tired yesterday, so I was sleeping early.
Conjugation of 眠る
Indicative imperfect
眠ってた

ずっと眠ってたのを見つけたのは幸運

I was lucky to find you asleep the whole time.

— ワン・バトル・アフター・アナザー (2025)

眠ってたのね

You were asleep, huh.

— お嬢さん (2016)

眠ってたのか

Were you asleep?

— ライフ・イズ・ビューティフル (1997)

よく眠ってた

You were sleeping pretty soundly.

— プラットフォーム (2019)

眠ってたんだ

I was asleep.

— グッバイ、レーニン! (2003)

眠ってた

Were you sleeping?

— ふたりのベロニカ (1991)