|Noah Webster's Dictionary|
1. (adv.) From the heart; with all the heart; with sincerity.
2. (adv.) With zeal; actively; vigorously; willingly; cordially; as, he heartily assisted the prince.
Int. Standard Bible Encyclopedia
har'-ti-li: Occurs (Colossians 3:23) as the translation of ek psuches, "out of the soul," "Whatsoever ye do, do it heartily as unto the Lord (who sees the heart and recompenses "whatsoever good thing a man does") and not unto men" (however they, your masters according to the flesh, may regard it); the Revised Version (British and American) "work heartily," margin (Greek) "from the soul."
In 2 Maccabees 4:37, we have "Antiochus was heartily sorry," psuchikos ("from the soul").
Heartily (6 Occurrences)
Matthew 11:25 About that time Jesus exclaimed, "I heartily praise Thee, Father, Lord of Heaven and of earth, that Thou hast hidden these things from sages and men of discernment, and hast unveiled them to babes. (WEY)
John 3:29 He who has the bride is the bridegroom; and the bridegroom's friend who stands by his side and listens to him, rejoices heartily on account of the bridegroom's happiness. Therefore this joy of mine is now complete. (WEY)
Acts 10:33 "Immediately, therefore, I sent to you, and I thank you heartily for having come. That is why all of us are now assembled here in God's presence, to listen to what the Lord has commanded you to say." (WEY)
1 Corinthians 16:19 The Churches in the province of Asia send you greetings; and Aquila and Prisca, in hearty Christian love, do the same, together with the Church which meets at their house. (See NAS)
Colossians 3:23 And whatever you do, work heartily, as for the Lord, and not for men, (WEB KJV ASV DBY WBS NAS RSV)
1 Peter 1:22 Now that, through your obedience to the truth, you have purified your souls for cherishing sincere brotherly love, you must love another heartily and fervently. (WEY)