in ‧ sin ‧ u ‧ a ‧ tion /ɪnˌsɪnjuˈeɪʃ ə n/ BrE AmE noun
1 . [countable] something that someone says which seems to mean something unpleasant, but does not say this openly:
She rejected the insinuation that she was partly to blame.
2 . [uncountable] when someone says something insinuating