大概

dàgài
  1. roughly
  2. probably
  3. rough
  4. approximate
  5. about
  6. general idea

CEDICT

Entry Composition

1 大 dà
  1. big; large; great
  2. older (than another person)
  3. eldest (as in 大姐 dàjiě)
  4. greatly; freely; fully
  5. (dialect) father
  6. (dialect) uncle (father's brother)
=2 概 gài
  1. (bound form) general; approximate
  2. without exception; categorically
  3. (bound form) bearing; deportment
=2 概 gài old variant of 概 gài