You can also exaggrate/repeat it to convey that you don't actually believe it. "O gelmiş" - "He/she (allegedly) came. "O gelmişmiş" " He/she (allegedly) came(b

You can also exaggrate/repeat it to convey that you don't actually believe it. "O gelmiş" - "He/she (allegedly) came. "O gelmişmiş" " He/she (allegedly) came(but its bs).