σεῖσις

χρὴ τῶν ἀγαθῶν διακναιομένων πενθεῖν ὅστις χρηστὸς ἀπ' ἀρχῆς νενόμισται → when a good man is hurt, all who would be called good must suffer with him | when good men are being dragged down, anyone with worthy credentials must feel their pain | when the noble are afflicted, those who all their lives have been deemed loyal must mourn

Click links below for lookup in third sources:

Full diacritics: σεῖσις	Medium diacritics: σεῖσις	Low diacritics: σείσις	Capitals: ΣΕΙΣΙΣ
Transliteration A: seîsis	Transliteration B: seisis	Transliteration C: seisis	Beta Code: sei=sis

English (LSJ)

εως, ἡ, (σείω) A shaking, Aret.CA2.2; concussion of the spine, Gal.18(1).496, al.

[Seite 869] ἡ, Erschütterung, Bewegung, Sp.

σεῖσις: ἡ, (σείω) σείσιμον, «κούνημα», Ἀρετ. Ὀξ. Νούσ. Θεραπευτ. 2. 2· διάσεισις τῆς σπονδυλικῆς στήλης, Γαλην.