Dictionary.com's Word of the Day for March 15: knackered I always thought this was Irish slang that crossed over. They say it 'entered English in the late 1800s' but they don't cite from where... #link You were reading Dictionary.com’s Word of the Day for March 15: knackered, a link posted with comment by MacDara Conroy. It is filed under Words and was published in May 2015. If you liked what you read here, you can follow this site on Twitter @MacDaraBlogs or via reader feed, and find many more entries in the Archive. Share this entry on Twitter, Tumblr, Facebook or Google+, or by email.