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about; roughly; approximately
generally; on the whole; as a rule
completely; quite; entirely; altogether; totally; not at all (with neg. verb)
outline; gist
今日のイベントには凡そ百人が参加した。
About a hundred people participated.
嘘をつくのは凡そ人として恥ずべき行為だ。
Lying is, generally speaking, conduct one should be ashamed of as a human being.
目的地までは凡そ三時間かかる予定だ。
It's expected to take about three hours.