as a rule

一概に、原則、概して、通例

as a rule の類語

usually, in general, by and large, all in all, on the whole, generally, mostly, mainly, normally, commonly, customarily, all things considered, predominantly, routinely, overall, chiefly, ordinarily, for the most part, as a whole, at large, in the long run, most often, to be expected, broadly, on balance, speaking generally, generally speaking, as usual, as per usual, roughly speaking, frequently, regularly, naturally, broadly speaking, as things go, roughly, habitually, as an approximation, altogether, largely, average, rule, normatively, prescriptively

as a rule の反意語

specifically

as a rule の言い換えを探すには

as a rule（一概に）の類語・言い換え（パラフレーズ）を、日本語訳つきで関連度順に並べています。英作文の語彙を増やしたいとき、長文読解で本文と選択肢の言い換えを見抜きたいときに使えます。