Loose to mean lose — I thought this one was well known, but I’ve been noticing it all over the place lately. The mix up typically comes when someone is trying to say something like “While last year saw the company losing ground in the sector, they hope to gain ground with the new launch.” Except many people would put “loosing” instead of “losing.” I get the mix up, because a double O should make that sound. But in this case, the change in sound is how you say the S.