Strong’s Greek
G464 — antagonizomai
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἀνταγωνίζομαι
antagonizomai — pronounced an-tag-o-nid'-zom-ahee
from 473 and 75; to struggle against (figuratively) ("antagonize"):--strive against. see GREEK for 473 see GREEK for 75
1 occurrence in the KJV.
Hebrews 12:4
Ye have not yet resisted unto blood, striving against sin.