New Delhi, Feb. 16 -- Vivek Mathur, a freelance copywriter, was quite dejected after deciding to ditch, after a decade, his print dictionary in favour of dictionary apps on his mobile phone. "Until six months ago, I always kept one in my bag, even though I was looking up words on my mobile phone. I think I was carrying a print dictionary more for sentimental reasons than anything else," the 31-year-old says....