νόσημα γὰρ αἴσχιστον εἶναί φημι συνθέτους λόγους → for I consider false words to be the foulest sickness
P. and V. οἴεσθαι; see suppose.
I ween: use particle, P. and V. που (enclitic), δήπου, Ar. and P. δήπουθεν.