I'm curious about whether the phrase "sit back down again" (along with anything similar, like "stand back up again") would be considered a tautology or if another term would be a better fit here. To clarify: I feel plenty confident in saying that it isn't a perfectly grammatical construction (both "sit back down" and "sit down again" are far better options), so my question is specifically regarding what label might fit best in this situation. Again, my educated guess is that it would be a tautology, but I figured I should hear other opinions to be sure!
Any and all help is much appreciated~~ ^^
EDIT: It looks like people are still coming across this post (judging from the two or three new replies), so I wanted to add an update. I eventually managed to work out on my own that what I was describing - the use of "to sit back down again" for "to reassume a seated position" - would most likely be a pleonasm. Regardless, thanks to everyone who gave their input~