suffix
under the pretense of; under the guise of
Attaches to nouns to mean 'pretending to be ...' or 'under the guise of ...'. Often used in negative or critical contexts.
彼は慈善家ごかしに金を集めている。
He is collecting money under the pretense of being a philanthropist.
その団体はボランティアごかしに勧誘する。
That group solicits people under the guise of volunteering.