Strong's #3636: okneros (pronounced ok-nay-ros')
 from 3635; tardy, i.e. indolent; (figuratively) irksome:--grievous, slothful.
Thayer's Greek Lexicon:
 ̓́ 
 
  oknēros 
 
 1) sluggish, slothful, backward
 
  Part of Speech: adjective
Relation: from G3635
  Citing in TDNT: 5:166, 681
 
Usage:
This word is used 3 times:
Matthew 25:26: "unto him, Thou wicked and  slothful servant, thou knewest that I reap"
Romans 12:11: "Not  slothful in business; fervent in spirit; serving the Lord;"
Philippians 3:1: "to me indeed is not  grievous, but for you it is safe."