Definition of "undertime"

undertime¹

/ˌʌn.dəɹˈtaɪ̯m/

verb
third-person singular simple present undertimes, present participle undertiming, simple past and past participle undertimed
1. (transitive) To measure wrongly, so that it seems to take less time than actually required.
2. (transitive, photography) To underexpose.

undertime²

/ˌʌn.dəɹˈtaɪ̯m/

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

undertime³

/ˌʌn.dəɹˈtaɪ̯m/

noun
1. (obsolete) The later part of the day; afternoon; undertide.
  Quotations
  He, comming home at undertime, there found / The fayrest creature, that he euer saw, / Sitting beside his mother on the ground; / The sight whereof did greatly him adaw.
  1590, Edmund Spenser, “Book III, Canto VII”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie, stanza 13