Strong’s Greek
G4289 — prothumos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
πρόθυμος
prothumos — pronounced proth'-oo-mos
from 4253 and 2372; forward in spirit, i.e. predisposed; neuter (as noun) alacrity:--ready, willing. see GREEK for 4253 see GREEK for 2372
2 occurrences in the KJV.
Matthew 26:41
Watch and pray, that ye enter not into temptation: the spirit indeed is willing, but the flesh is weak.
Romans 1:15
So, as much as in me is, I am ready to preach the gospel to you that are at Rome also.