open-handed 
adjective
1(Of a blow) delivered with the palm of the hand: an open-handed slap to the side of the face...
- She punctuated her question with a sharp open-handed slap.
- It's an open-handed slap, but powered clear from the hips, and he absolutely staggers.
- If that fails, a strong, open-handed slap in the ear or mouth works pretty well.
2Giving freely; generous: open-handed philanthropy...
- If, like me, you live and work in a big city, you may at first mistrust their open-handed friendliness.
- You are very open-handed in your aim to help your fellow man.
- I would also like to thank Tim Barnett for his chairing, which was both fair and open-handed in its approach.
Synonyms
generous, magnanimous, charitable, benevolent, beneficent, big-hearted, great-hearted, munificent, bountiful, liberal, handsome, princely;
altruistic, kind, kindly, philanthropic, chivalrous, noble, unselfish, selfless, self-sacrificing, generous to a fault, ungrudging, unstinting
literary bounteous
Derivatives
open-handedly
- To this, Jun open-handedly received it and quickly flipped through the pages it contained, skimming the details and the data regarding the Society's secret source of information.
- Slowly, the young angel marched closer towards the watching Stand, taking a knee about a foot away from the young boy while offering to him his trusted weapon open-handedly.
open-handedness
- Winder's history of immigration charts an admirable course between the Scylla of racist little Britainism and the Charybdis of utopian open-handedness.
- For here again, the emir / Federation president may see these expenditures as ways of forfending local opposition to Abu Dhabi's munificence toward the other emirates, and its open-handedness in foreign aid.
- Such open-handedness must have war and plunder to feed it.