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Verb: go under
  1. (of a ship etc.) go under water
    "The raft went under and its occupants drowned";
    - sink, settle, go down
  2. (astronomy) go down below the surface (esp. of water) to become submerged
    "the sun goes under early these days";
    - set, go down
  3. Be called; go by a certain name
    "She goes under her maiden name again";
    - go by

Derived forms: going under, goes under, went under, gone under

See also: travel

Type of: come down, descend, fall, go down, sink