TERRORISM, economic turmoil and climate change have shaped the 2000s, not only affecting how people live but their language, with global warming and 9/11 topping a list of the most used words of the decade. The Global Language Monitor, which uses a math formula to track the frequency of words and phrases in print and electronic media, said Obama came third in the list with the surname of U S President Barack Obama used as the stem for other words. Bail-out was listed fourth after the bank bail-out was one of the first acts of the financial crisis, evacuee came fifth in the wake of Hurricane Katrina devastating New Orleans, and derivative featured fifth. Google, surge, Chinglish meaning a hybrid of Chinese and English, and tsunami, after the 2004 Asian disaster that left 230,000 people dead or missing, followed. Looking at the first decade of the 21st century in words is a sober, even sombre, event, said Paul JJ Payack, president of The Global Language Monitor. For a decade that began with such joy and hope, the words chosen depict a far more complicated and in many ways, tragic time. Nevertheless, signs of hope and renewal can be found in the overall lists. Payack said the top phrase of the decade was climate change followed by financial tsunami and Ground Zero. Technologys impact on the past decade was reflected in the list with Twitter, the micro-blogging site, one of the most used words while blog and texting featured on the list. Hollywood continued to flex its muscle, with Slumdog from the Oscar-winning film Slumdog Millionaire, referring to child inhabitants of Mumbai slums, making its mark in global language. US comedian Stephen Colberts truthiness, defined as truth that comes from the gut not books, came in at No. 25. Telegraph