Word.ws English Dictionary

up on

up on adjective: well-informed concerning.

Adjective

up on (not generally comparable, comparative more up on, superlative most up on)

  1. (colloquial, idiomatic, not comparable, usually) Well-informed concerning.
    • The tour guide was certainly up on his history.
    • Maybe you aren't up on current events, but we just got our asses kicked, pal1986, Aliens

Forms of up on

comparativemore up on
superlativemost up on

Questions about up on

What does up on mean?
Up on means well-informed concerning.
What part of speech is up on?
Up on is an adjective.

Words near up on in the dictionary

  1. up in the air
  2. up Jenkins
  3. up line
  4. up lines
  5. up north
  6. up on
  7. up on one's ear
  8. up one's game
  9. up one's own ass
  10. up one's sleeve
  11. up one's sleeves

Source and license

Adapted from Wiktionary: up on (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: En-au-up on.ogg.

Cite this entry: “up on.” Word.ws, https://word.ws/up_on. Based on Wiktionary, CC BY-SA 4.0.