retro
a Latin prefix that means "backward
retroactive
Going backward in time. To have an effect on something that is past
retrograde
Moving backward or having a backward motion.
retrospect
Thoughts looking backward to the past.
e, ex
Latin prefixes that means "out.
egress
An exit. A place to go out.
emergent
Coming out, beginning.
exclusion
Shutting something or someone out.
exile
Being forced to leave one's country or home.
Fac, fec, fic, fy
Latin roots that all mean "Make
artifact
Any object made by human skill or handiwork -- usually of cultural significance.
artificial
Made by human skill or labor; not natural.
facsimile
Something made to be like something else-- an exact copy.
falsify
To make false or incorrect.
ineffective
Not making something happen. Not useful.
infection
The condition when you have gotten a disease from germs.
personify
To pretend to be someone else. To pretend to be another person or have the form of another idea or thing.
proficient
Able to make good progress because of being skilled or being an expert.
mis
an Old-English prefix that means "badly" or "wrongly
mischievous
Doing bad things and causing trouble.
miscue
A mistake or a "bad" action.
misgiving
A feeling of doubt, suspicion, or anxiety that something bad is going to happen.
misnomer
Something that is wrongly named.