[ swīðhwæt] very active, Run 5.
[ swīðhycgende] (i) † bold-minded.
[ swīðian] to become strong: prevail: fix.
[ swīðlic] intense, excessive, severe, violent, Æ: immense, Æ: effective. adv. -līce, AO, CP.
[ swīðlicnes] f. excess, RBL 737.
[ swīðmihtig] very mighty, PPs 8513.
[ swīðmōd] stout-hearted, brave: insolent, arrogant.
[ swīðmōdnes] f. magnanimity.
[ swīðnes] f. excess, violence, CM 458.