A — 1: ἀντίδικος
(Strong's #476 — Noun Masculine — antidikos — an-tid'-ee-kos )

firstly, "an opponent in a lawsuit," Matthew 5:25 (twice); Luke 12:58; 18:3 , is also used to denote "an adversary or an enemy," without reference to legal affairs, and this is perhaps its meaning in 1—Peter 5:8 , where it is used of the Devil. Some would regard the word as there used in a legal sense, since the Devil accuses men before God.

B — 1: ἀντίκειμαι
(Strong's #480 — Verb — antikeimai — an-tik'-i-mahee )

is, lit., "to lie opposite to, to be set over against." In addition to its legal sense it signifies "to withstand;" the present participle of the verb with the article, which is equivalent to a noun, signifies "an adversary," e.g., Luke 13:17; 21:15; 1—Corinthians 16:9; Philippians 1:28; 1—Timothy 5:14 . This construction is used of the Man of Sin, in 2—Thessalonians 2:4 , and is translated "He that opposeth," where, adopting the noun form, we might render by "the opponent and self-exalter against..." In Galatians 5:17 it is used of the antagonism between the Holy Spirit and the flesh in the believer; in 1—Timothy 1:10 , of anything, in addition to persons, that is opposed to the doctrine of Christ. In these two places the word is rendered "contrary to." In the Sept. it is used of Satan, Zechariah 3:1 , and of men, Job 13:24; Isaiah 66:6 . See CONTRARY , OPPOSE.

C — 1: ὑπεναντίος
(Strong's #5227 — Adjective — hupenantios — hoop-en-an-tee'-os )

"contrary, opposed," is a strengthened form of enantios (en, "in," and antios, "set against"). The intensive force is due to the preposition hupo. It is translated "contrary to," in Colossians 2:14 , of ordinances; in Hebrews 10:27 , "adversaries." In each place a more violent form of opposition is suggested than in the case of enantios. See CONTRARY.