under or below an object or a surface; at a lower place or level; directly beneath; "we could see the original painting underneath"; "a house with a good foundation underneath"
on the lower or downward side; on the underside of; "a chest of drawers all scratched underneath"
a book (or manuscript) consisting of large sheets of paper folded in the middle to make two leaves or four pages; "the first folio of Shakespeare's plays"
continue to live; endure or last; "We went without water and food for 3 days"; "These superstitions survive in the backwaters of America"; "The race car driver lived through several very serious accidents"; "how long can a person last without food and water?"
continue in existence after (an adversity, etc.); "He survived the cancer against all odds"