be well up on
• be well informed about.
• "they are well up on current environmental trends"
Similar:
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,
up to speed on,
clued up on,
genned up on,
plugged into,
cognizant of,
perfect in,
Opposite:
ignorant of,
unfamiliar with,
