Today I moved a folder (a folder I created myself that contained video files) from my HD that was almost 100GB in size to an external HD (I don't use Time Machine/never have) and once I ejected the external HD I moved the original folder to the trash and emptied it. This was about 8+ hours ago and the space is still not freed up on my HD.
I already tried re-indexing spotlight and that didn't help either. I am out of ideas. My HD is showing as having 10 GB of free space when it should be around 110 GB of free space. I've also re-started my computer several times.
I run Mac OS X El Capitan 10.11.6.
ETA: I can delete other files now (like I just deleted a smaller 3 GB file and that bumped my free space up to 14 GB but how can that be possible? It's like the huge folder I deleted never actually cleared but smaller files are being cleared.