ungenerous

adjectives

lacking in magnanimity
"it seems ungenerous to end this review of a splendid work of scholarship on a critical note"- Times Litt. Sup.; "a meanspirited man unwilling to forgive"
meanspirited, ungenerous
antonym
generous
unwilling to spend
"she practices economy without being stingy"; "an ungenerous response to the appeal for funds"
stingy, ungenerous