ἀρτιότης
From LSJ
λύπης ἰατρός ἐστιν ἀνθρώποις λόγος → for men reason cures grief, for men reason is a healer of grief, a physician for grief is to people a word, pain's healer is a word to man, logos is a healer of man's anguish, talking through one's grief is therapeutic
English (LSJ)
ητος, ἡ,
A soundness, entireness, Arr.Epict.1.22.12, Gal. Thras.12, Stob.2.7.7a. 2 of numbers, evenness, opp. περιττότης, Arist.Metaph.1004b11.