The Collaborative International Dictionary of English v.0.48:
Open-handed \O"pen-hand`ed\, a.
Generous; liberal; munificent. -- O"pen-hand`ed*ness, n.
--J. S. Mill.
Moby Thesaurus II by Grady Ward, 1.0:
52 Moby Thesaurus words for "openhanded":
apparent, big, bighearted, bounteous, bountiful, chivalrous,
distinct, elevated, evident, exalted, free, freehanded,
freehearted, generous, giving, gracious, great, great of heart,
greathearted, handsome, heroic, high, high-minded, hospitable,
idealistic, knightly, large, largehearted, lavish, liberal, lofty,
magnanimous, manifest, munificent, noble, noble-minded, obvious,
open, openhearted, palpable, patent, plain, princely, profuse,
stintless, straightforward, sublime, ungrudging, unselfish,
unsparing, unstinted, unstinting