不吝

not to stint / to be generous (with praise etc) / to be prepared to (pay a fee, give of one's time etc)

no; not so / (bound form) not; un-

stingy

variant of 吝[lin4]

to be so kind as to enlighten me

lit. do not begrudge gems of wisdom (idiom, humble expr.); fig. Please give me your frank opinion. / Your criticism will be most valuable.