If you ahve a diners club card you can sue the below lounge (with a guest) - a co-card holder is also eligable. Otherwise I would discreetly ask if you can use the lounge for a fee - showing a few 10 dollar bills.

New Delhi Domestic Airport -- Delhi, India

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Lounge Name: ITC Port Lounge
Lounge Location: Terminal 1B
Telephone: 91-11-25675283

Hours Open: 5 am to 11 pm
Languages Spoken: English and Hindi
Entry Conditions: Conditions of entry to any Diners Club Airport Lounge may change from time to time, subject to policies and procedures imposed by airport security.
Amenities Offered: Flight information, newspapers, magazines, soft beverages and refreshments
Fees: Complimentary for Diners Club Cardmembers. Guest fees are as per normal menu rates at lounge.