Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
αμφιτάπουσ spreads LXX.2Sam.17.28
αμφιτάποισ spreads LXX.Prov.7.16

Liddell-Scott-Jones

αμφίταπος (amphitapos) a spread G:A

Included with: αμφίταπος [ᾰ], ητος, ὁ,

rug or carpet with pile on both sides, [Refs 4th c.BC+]:—also ἀμφίταπις, ιδος, ἡ, [Refs 2nd c.AD+]; and ἀμφίταπος, ὁ, [LXX+3rd c.BC+]

LSJ Scripture Refs: LXX.Prov.7.16