ἅψις
From LSJ
Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
English (LSJ)
εως, Ion. ιος, ἡ, (ἅπτομαι)
A touching, Hp.Epid.7.5; contact, Pl. Prm.149a, Arist.HA621a11: pl., Pl.Prm.149c. 2 metaph., ἅ. φρενῶν distraction of mind, Hp.Acut.52.
German (Pape)
[Seite 421] ἡ, das Berühren, Plat. Parm. 149; Arist.; φρενῶν, Berrücken des Verstandes, Hippocr.
Greek (Liddell-Scott)
ἅψις: -εως, ἡ, (ἅπτομαι) ψαῦσις, Ἱππ. 1211Β, Πλάτ. Παρμ. 149Α, κἑξ.
2) μεταφ., ἅψις φρενῶν, διατάραξις φρενῶν, παραφροσύνη, Ἱππ. π. Διαίτ. Ὀξ. 392.