इतनी देर तक

for this long

→ इतना
phrase Rare #9,352
for this long Refers to a length of time, often with emphasis or surprise; depending on context, it can also mean “for so long.”
HI: तुम इतनी देर तक कहाँ थे?
EN: Where were you for so long?

सभी लोग यहाँ इतनी देर तक हैं।

Everyone has been here for so long.

— 風立ちぬ (2013)

इतनी देर तक करने की शक्ति है तेरे में?

Do you have the stamina to keep going for that long?

— Axone (2019)

आपने मेरे बेटे पर भरोसा किया इतनी देर तक, सही?

You trusted my son all this time, right?

— రాజా ది గ్రేట్ (2017)