not sure if I agree with the merriam webster anto-nyms
wanna look at a Greek dictionary?
word is defined and then they look at ten instances of the use of the word - here we are looking at swfrosu/nh since I dont have gk keyboard
σωφροσύνη
A.soundness of mind, prudence, discretion, Od.23.13; in pl., ib.30; the common form first in Thgn.379, 701, 1138, Epich.101; “αἰδὼς σωφροσύνης πλεῖστον μετέχει” Th.1.84; “ς. λαβεῖν” Id.8.64; sanity, opp. μανία, X.Mem. 1.1.16, cf. Act.Ap.26.25.
XMem is Xenphons Memorabilia - and then you kinda go and look in X Mem and see wht the use is - - - you do this for 3 y. - note μανία is offered as an opp of sophrosyne
but look ! eedoo !
act ap 26 25 - Liddell cites Acts of the Apostles - can this be true?
25 “I am not insane, most excellent Festus,” Paul replied. “What I am saying is true and reasonable.
εἰς µανίαν περιτρέπει. 25 ὁ δὲ Παῦλος, Οὐ
µαίνοµαι, φησίν, κράτιστε Φῆστε, ἀλλὰ ἀληθείας καὶ σωφροσύνης
ῥήµατα ἀποφθέγγοµαι.
I translate: you mad bebby - no rastus it all makes sense
( how like modern AB!) and µανίαν is used to oppose ἀληθείας καὶ σωφροσύνης