hilaros (hil-ar-os'); propitious or merry ("hilarious"), i.e. prompt or willing:
KJV - cheerful.
"But this I say, He which soweth sparingly shall reap also sparingly; and he which soweth bountifully shall reap also bountifully. Every man according as he purposeth in his heart, so let him give; not grudgingly, or of necessity: for God loveth a cheerful giver. And God is able to make all grace abound toward you; that ye, always having all sufficiency in all things, may abound to every good work:" 2 Corinthians 9:6-8