'Understand' Etymology

Online Etymology Dictionary:

understand
O.E. understandan "comprehend grasp the idea of," probably lit. "stand in the midst of," from under + standan "to stand" (see stand). If this is the meaning, the under is not the usual word meaning "beneath," but from O.E. under, from PIE *nter- "between, among" (cf. Skt. antar "among, between," L. inter "between, among," Gk. entera "intestines;" see inter-). But the exact notion is unclear. Perhaps the ult. sense is "be close to," cf. Gk. epistamai "I know how, I know," lit. "I stand upon." Similar formations are found in O.Fris. (understonda), M.Dan. (understande), while other Gmc. languages use compounds meaning "stand before" (cf. Ger. verstehen, represented in O.E. by forstanden). For this concept most I.E. languages use fig. extensions of compounds that lit. mean "put together," or "separate," or "take, grasp."