ἀμφηρικός
From LSJ
ἁρμονίη ἀφανὴς φανερῆς κρείττων → the hidden attunement is better than the obvious one, invisible connection is stronger than visible, harmony we can't see is stronger than harmony we can, unseen harmony is stronger than what we can see
English (LSJ)
ή, όν,
A = ἀμφήρης 11: ἀκάτιον ἀ. sculling-boat, Th.4.67.
Greek (Liddell-Scott)
ἀμφηρικός: -ή, -όν, = ἀμφήρης, ΙΙ., ἀκάτιον ἀμφ., ἐλαφρὸν ἐφόλκιον, ἐν τῷ ὁποίῳ ἕκαστος ἐρέτης ἐκωπηλάτει μὲ δύο κώπας, ἢ ἁπλῶς δίκωπον, Θουκ. 4. 67. - «ἀμφηρικὸν ἁκάτιον· λῃστρικόν, ἐν ᾧ εἶς ἐλαύνει δύο κώπας», Ἡσύχ.