1‘an informed society’
knowledgeable, enlightened, illuminated, literate, well informed, well educated, educated, schooled, instructed
well briefed, well versed, abreast of the facts, primed, up to date, up to speed, in the picture, in the know
au courant, au fait
informal clued up, genned up, filled in, plugged in
British informal switched-on, sussed
US informal down
We take a look at several popular, though confusing, punctuation marks.