Definition of be well up on or in in English:

be (well) up on (or in)

Be well informed about: they are well up on current environmental trends
More example sentences
  • Even officials who would presumably be up on such issues appeared fuzzy about the central questions.
  • She wanted to be be up on any news sent to them.
  • However, you two don't seem to be up on current events.
Synonyms
well versed in, well informed about, conversant with, knowledgeable about, informed about, abreast of, apprised of, up to date on, au courant with; familiar with, acquainted with, au fait with, at home with, no stranger to; experienced in, proficient in, practised in, skilled in
informal up to speed on, clued up on, genned up on, plugged into
formal cognizant of
dated perfect in
See parent entry: up

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Word of the day ween
Pronunciation: wiːn
verb
be of the opinion; think or suppose