šivʿātayim שִׁבְעָתַיִם ‘sevenfold’ (Hebrew)

Etymology^?: dual of ševaʿ שֶׁ֫בַע ‘seven’ (adverbially)
Roots: שׁבע שׁבעה

šivʿātayim n, f
1) sevenfold, seven times
 1a) sevenfold, seven times as much
 1b) seven times