פֿרעך
'insolent' (adjective, adverb)
{GERMANISM {though not so marked in Stutchkoff's Thesaurus}}

ETYMOLOGY

{Perhaps a Germanism borrowed from NHG in the 19th c. The main native term is חוצפּהדיק.}
Got. faihu-friks 'avaricious', ON frekr 'greedy; harsh; rigorous', OE frec 'eager, greedy, bold', Dutch vrek 'avaricious person', OHG freh 'eager, avid', MHG vrech 'brave', NHG frech 'insolent'; from PGmc ✱freka- 'avaricious' < ✱preg-o- (EUR), from the European root ✱preg- 'to desire'.
Related: Polish pragnąć 'to yearn for', Czech prahnouti 'to covet'