Dictionary definition · up
verb
- raise"up the ante"
adjective
- being or moving higher in position or greater in some value; being above a former position or level"the anchor is up"
- out of bed"are they astir yet?"
- getting higher or more vigorous"it's an up market"
- extending or moving toward a higher place"the up staircase"
- (usually followed by ‘on’ or ‘for’) in readiness"he was up on his homework"
- open"the windows are up"
adverb
- spatially or metaphorically from a lower to a higher position"look up!"
- to a higher intensity"he turned up the volume"
- nearer to the speaker"he walked up and grabbed my lapels"
- to a more central or a more northerly place"was transferred up to headquarters"
- to a later time"they moved the meeting date up"
Source: Open English WordNet (CC BY 4.0).