with no one else present [= in private]:
I must talk to you privately.
if you feel or think something privately, you do not tell anyone about it:
Laura praised the pictures, though she privately thought they were rather ordinary.
Privately, Harriet had to agree.
not publicly or as part of your work
Privately, senior officials agreed that not many people had voted.
4 especially British English
using or involving private rather than government institutions:
Both children are privately educated.
a privately-owned company