Noun, Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no'
good-naturedness
ある戸別訪問のセールスマンがお人好しの老婦人を馬鹿にして大金を持ち逃げした。A certain door-to-door salesman made a fool of a trusting old lady and went off with a lot of her money. Noun
good-natured person; credulous person; easy mark; simple soul; soft touch
Also written お人よし【おひとよし】