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The original title (working title of the movie) was VAASU, which is Mumbai slang for someone that is always in the scent of women. It was changed to HUNTERRR to appeal to a pan-India audience. That is the term used in the film consistently and HUNTERRR remains only the title finding no mention at all in any dialogs.
A lot of industry experts had felt the original title was a better choice since it would go towards creating a new vocabulary term similar to how "waat lag gayi" from the MUNNABHAI series has been now adopted into conversational Hindustani/Hindi however for easier identification HUNTERRR was retained.
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