Determined.
The letters mem- make up the Latin root syllable that means 'a calling to mind'. An English language derivative word is the verb 'to remember'. A Latin language derivative word of that root syllable is the infinitive and root word memorari, which means 'to be mindful of'.
There is no standard English word "contradact." It may be a typo or a made-up word. If you meant "contradict," it means to assert the opposite of a statement made by someone else or to be in conflict with something else.
Yes, "useful" is a compound word made up of the root word "use" and the suffix "-ful" which means "full of."
In Japanese, "Xion" does not have a specific meaning as it is not a traditional Japanese word. It could be a made-up name or a foreign word.
I'm not aware of any word "notabina" in any other language. It appears to be a unique or made-up word.
neologism
indecisive ... is that the one you were looking for?
"Standing at a fork in the road" can mean that someone faces a choice, but hasn't yet made a decision.
exaggerate
multicultural
to be made up of/from other objects
I've Got My Mind Made Up To Serve The LordI've Got My Mind Made Up To Serve The Lord (X3)Lord I've Got My Mind Made UpI've Got My Mind Made Up To Praise His Name (X3)Lord I've Got My Mind Made UpI've Got My Mind Made Up To Stay On Fire (X3)Lord I've Got My Mind Made Up
It is a made-up word that means, "Really cool".
Heterogeneous or multifarious.
Fiction
Freakowats is a word. Sidney Metcalf (me) made it up. It means your a freako (werido)
Cumulus in Latin means: heap. In English, this word means: a cloud, made up of round heaps