double up
From LSJ
αὐτῇ καθ' αὑτὴν εἰλικρινεῖ τῇ διανοίᾳ χρώμενος → by using his mind alone by itself and uncorrupted
αὐτῇ καθ' αὑτὴν εἰλικρινεῖ τῇ διανοίᾳ χρώμενος → by using his mind alone by itself and uncorrupted
v. trans.
P. and V. κάμπτειν (Eur., Phoen. 1414). V. intrans. P. and V. κάμπτεσθαι, P. συγκλᾶσθαι. Doubled up, adj.: V. διπλοῦς.