Latin:
* retro-: meaning "backwards, behind, back," as in retrograde, retrospective, retroactive
* re-: can mean "back, again, anew," as in reconsider, rewrite, redo
* post-: can mean "after, behind," as in post-mortem, postmodern
* ab-: can mean "away, from," as in absent, abnormal, abdicate (in some cases, can imply a "backwards" motion)
Greek:
* ana-: meaning "back, up, again," as in anaphase (in cell division), anachronism
* epi-: can mean "upon, on, after," as in epilogue, epidemic (in some cases, can imply a "backwards" motion)
Other:
* back-: meaning "behind, towards the rear," as in backtrack, backup, backstage
* counter-: meaning "opposite, against," as in counterclockwise, counterproductive (can imply a "backwards" motion)
Important Note: While these prefixes often indicate a "backward" direction, their exact meaning can vary depending on the context of the word. It's always best to check the dictionary for a precise definition.