Proto-IE: *spē- (sph-)
Meaning: to prosper, to turn out well
Hittite: ispai- (II) 'sich satt essen' (Tischler 408-409)
Tokharian: ? B spāw- 'subside, run dry' (Adams 717)
Old Indian: sphāyate `to grow fat, swell, increase', caus. sphāvayati, ptc. sphītá-; sphīti- f. `welfare, prosperity', sphātí- f. `fattening, breeding (of cattle), increase, growth, prosperity', sphāra- `extensive, wide, large', sphirá- `fat'
Avestan: spǝ̄nvat_ `er förderte'
Latin: spēs, -ēī, pl. spērēs `Erwartung, Hoffnung', spērāre `hoffen, erwarten'; prosperus, -a `günstig, glücklich'
Russ. meaning: процветать, удавать себе
References: WP II 656 f
piet-prnum,piet-meaning,piet-hitt,piet-tokh,piet-ind,piet-avest,piet-slav,piet-balt,piet-germ,piet-lat,piet-rusmean,piet-refer,