Adverb (fukushi)
(not) so; (not) particularly; (not) very; (not) that much
Usually written using kana aloneusu. with a negative verb
ごく最近まで、先進国の人々は環境にさほど気にかけてはいなかった。Until quite recently, people in developed countries didn't care much about the environment.
Also written 左程【さほど】