信じてるの

do you believe?

→ 信じる
phrase Common #7,005
do you believe? Informal phrasing; の can make the question sound conversational or add emphasis.
JA: 本当に彼のことを信じてるの?
EN: Do you really believe him?

トムの話、まだ信じてるの?

Do you still believe Tom's story?

あの人、来世を信じてるのよ。

That person believes in reincarnation.

本当に信じてるの?

Do you really believe it?

私はナチでなく聖杯を信じてるのよ

I'm not a Nazi—I believe in the Holy Grail.

— インディ・ジョーンズ/最後の聖戦 (1989)

夜に爪を切るなって、まだそんな迷信を信じてるの?

Do you still believe in that old superstition that you shouldn’t cut your nails at night?

トムって吸血鬼を信じてるのよ。

Tom believes in vampires, you know.

トムって、幽霊を信じてるの?

Does Tom believe in ghosts?

まだ、サンタクロースを信じてるの?

Do you still believe in Santa Claus?

まだ、信じてるの。

You still believe that?

本当にああいうの信じてるの?

Do you really believe in that kind of thing?

妖精を信じてるの?

Do you believe in fairies?

サンタさんのこと信じてるの?

Do you believe in Santa Claus?