Trūwa, good faith: true, truth, troth, betroth.
Twā, two: twain, twelve, twenty, twig, twine, twist.
Wana, lacking: wan, wane, want, wanton.
Wef-an, to weave: weaver, web, woof.
Warū, defense: war, wary, aware, ward, guard, guardian.
Wit-an, to know: wit, wise, wisdom, wistful, witness.
Wraest-an, to wrest: wrest, wrestle, wrist.