swiðrian = [sweðrian]
[ swīðrian] to avail, prevail, Æ.
[ swīðsnel] very quick, agile, Cra 82.
[ swīðspecende] (ȳ) verbose, talkative, OEG 56140.
[ swīðsprecel] talkative, LPs 114.
[ swīðstincende] strong-smelling, WW 40818.
[ swīðstrang] very strong, BH 386b.
[ swīðstrēme] having a strong current, rapid, BH 386.
[ swīðswēge] strong-sounding, heroic, OEG.