σκληρός sklērós

Greek · Strong's G4642 · used 6 times in 6 verses

Meaning

dry, i.e. hard or tough (figuratively, harsh, severe)

In the King James Version: fierce, hard

Derivation: from the base of G4628 (σκέλος);

Matthew 25:24 Finally, the servant who had received the one talent came and said, ‘Master, I knew that you are a hard man, reaping where you have not sown and gathering where you have not scattered seed.
John 6:60 On hearing it, many of His disciples said, “This is a difficult teaching. Who can accept it?”
Acts 9:5 “Who are You, Lord?” Saul asked. “I am Jesus, whom you are persecuting,” He replied.
Acts 26:14 We all fell to the ground, and I heard a voice say to me in Hebrew, ‘Saul, Saul, why do you persecute Me? It is hard for you to kick against the goads.’
James 3:4 Consider ships as well. Although they are so large and are driven by strong winds, they are steered by a very small rudder wherever the pilot is inclined.
Jude 1:15 to execute judgment on everyone, and to convict all the ungodly of every ungodly act of wickedness and every harsh word spoken against Him by ungodly sinners.”