"Sexual impropriety" refers to any inappropriate or unacceptable behavior of a sexual nature. It may involve actions, remarks, or advances that cross boundaries, show disrespect, or violate someone's consent in a sexual context. Full definition
The Liberal Democrat Home Office Minister Jeremy Browne has said he was surprised by the allegations of sexual impropriety against Lord Rennard broadcast by Channel 4 News. (itv.com)
To clarify: the reference to «final disciplinary proceedings» relates to claims that the peer had brought the party into disrepute by his criticisms of party processes, not the earlier investigations into allegations of sexual impropriety by four women, which had also been dropped. (theguardian.com)
The Liberal Democrats have launched an immediate review into its procedures for dealing with harassment allegations after a number of women made claims of sexual impropriety against the party's former chief executive. (itv.com)