(adv.) In an indifferent manner; without distinction or preference; impartially; without concern, wish, affection, or aversion; tolerably; passably.

ad eundem apathetically as as well ceteris paribus coldly coolly correspondingly disinterestedly dully equally equivalently evenly fair to middling fairishly fairly halfheartedly heartlessly identically impassively listlessly lukewarmly mediocrely middling well middlingly moderately modestly numbly passably perfunctorily phlegmatically plucklessly proportionately so so-so spiritlessly spunklessly tolerably unconcernedly uninterestedly with indifference with utter indifference without distinction