undertime

/AH1 N D ER0 T AY0 M/
noun
  1. 1

    (informal) The time spent at a workplace doing non-work activities.

  2. 2

    (obsolete) The later part of the day; afternoon; undertide.

verb
  1. 1

    (transitive) To measure wrongly, so that it seems to take less time than actually required.

  2. 2

    (transitive, photography) To underexpose.