occurring or done without delay; prompt

तात्कालिक

English Usage: "I need an immediate response to my request."

Hindi Usage: "मुझे अपनी अनुरोध का तात्कालिक उत्तर चाहिए।"

a condition in which the immune system reacts abnormally to a foreign substance

एलर्जी

English Usage: "She has a severe allergy to peanuts."

Hindi Usage: "उसे मूँगफली से गंभीर एलर्जी है।"