Definition of up- in English:

prefix

• 1(added to verbs and their derivatives) upward.

  ‘upturned’

  ‘upthrow’

  1. 1.1To a more recent time; to a newer or better state.
     More example sentences

     • ‘update’
     • ‘upbeat’
     • ‘upgrade’
     • ‘upscale’

• 2(added to nouns) denoting (direction of) motion up.

  More example sentences

  • ‘upriver’
  • ‘uphill’
  • ‘upwind’

• 3(added to nouns) higher.

  ‘upland’

  ‘upstroke’

  1. 3.1Increased.
     ‘up-tempo’