A person who constantly changes their opinion about something.
He was so adamant about wearing a mask at the store. His cousin passed from Covid......Next day, he went clubbing with a Trump hat on. He believes in his constitutional rights. What an opinionatapus.
When a person comes up with ANY excuse possible in order to just NOT tell the truth out of sheer stubbornness.
She totally underfucked herself so hard when she refused to just let them know that she had mononucleosis instead of covid, what a stubborn bitch.