I was reading something about strength training and I came across that word. I am wondering if that's a legitimate verb?
If so, what would be the difference between "deload" and "offload" or even "unload"?
It seems that term was once coined as an attributive word (noun/adjective) and then evolved into the verb!
Added later: You can find several instances of this word in the link below, for example:
This is not referring to normal deloading. With a deload, your goal is to do as little as you can to maintain performance while diminishing fatigue, meaning minimizing muscle loss and likely increasing in strength (with fatigue diminished). [Reference]