Strong’s Greek
G85 — ademoneo
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἀδημονέω
ademoneo — pronounced ad-ay-mon-eh'-o
from a derivative of adeo (to be sated to loathing); to be in distress (of mind):--be full of heaviness, be very heavy.
3 occurrences in the KJV.
Matthew 26:37
And he took with him Peter and the two sons of Zebedee, and began to be sorrowful and very heavy.
Mark 14:33
And he taketh with him Peter and James and John, and began to be sore amazed, and to be very heavy;
Philippians 2:26
For he longed after you all, and was full of heaviness, because that ye had heard that he had been sick.