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onliner

British  
/ ɒnˈlaɪnə /

noun

  1. a person who uses the internet regularly

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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You need not be a computer expert or an experienced "onliner" to find it useful.

From The Online World by De Presno, Odd