ἀντιστῆναι [1 verse](verb aor inf act ) "Resist" is anthihestimi, which "to set against", "to match with", "to compare", "to stand against", "to withstand", "to turn out unfavorably," and "to make a stand."

ἀνθρωποκτόνος [1 verse](adj sg masc/fem nom)"Murderer" is  anthrōpoktonos, which means "murdering men," and "homicide." From the roots anthropos- and -apokteino.  - -  "Murderer" is another noun that Jesus only uses here that means "murdering men," and "homicide." The word literally means "man killer" describing both murderers and the act of murder. The "killer" part is from, the verb Jesus uses in John 8:37 and John 8:40 to accuse these people of wanting to kill him.

ἄνθρωπος [209 verses](noun sg masc nom) "Man" is anthropos, which is "man," and, in plural, "mankind." It also means "humanity" and that which is human and opposed to that which is animal or inanimate. Used as a form of address, it is a bit contemptuous, "sir." - The Greek word for "man" means "man," "person" and "humanity" in the singular. In the plural, it means "men," "people," and "peoples." 

ἀντὶ [9 verses](prep) "For" is anti, which means "opposite", "over against", "instead", "in place of", "at the price of", "in return for", "for the sake of", "against", "in return", "equal to", "corresponding to," and "mutually." -- The word translated as "for" has many meanings that fit this context: "in place of", "at the price of", "in return for," and "for the sake of." However, in English, this Greek word, anti, is from its primary meaning "opposite."

ἀντίδικος  [3 verses] (adj sg masc/fem nom) "Adversary" is antidikos, which means "opponent or adversary in a suit", "the defendant [primarily]," "the plaintiff," and, generally, "opponent," and "adversary."  -- The word translated as "adversary" primarily means an opponent in a lawsuit, but it can be used to mean opponents in general.