פֿאַלב 2
'flabby'

ETYMOLOGY

[How the meaning 'flabby'? DW² lists a meaning 'kraftlos geworden'.]
ON fǫlr, OE fealu, English fallow, OS falu 'fallow, yellow', Dutch vaal 'faded, drab', OHG falo 'fallow, yellow', MHG val, valwes, NHG (more LG) fahl 'pale', (more Upper German) falb 'fallow, dun (of horses)'; from PGmc ✱falwa- 'pale'; from PIE ✱pol-uo-, with uo-suffix for color names.
Related: Latin pullus 'drab-colored, sombre', Lithuanian pal̃vas 'light yellow, straw-colored', Old Church Slavonic plavъ, 'white', Russian поло́вый, полово́й 'pale yellow, sandy', Sanskrit paruṣá- 'grey, grey-brown, dirty'