The story
- Proto-Indo-European · derived from*swer-“heavy”
- Proto-Germanic · inherited from*swēraz
- Proto-West Germanic · inherited from*swār
- Old English · inherited fromswǣr
- Middle English · inherited fromswere
- English todaysweer
From Middle English swere, sware, from Old English swǣr, swār (“heavy, of great weight, oppressive, grievous, painful, unpleasant, great, sad, feeling or expressing grief, grave, slow, dull, sluggish, slothful, indolent, inactive from weakness, enfeebled, weak”), from Proto-West Germanic *swār, from Proto-Germanic *swēraz, *swērijaz (“heavy”), from Proto-Indo-European *swer- (“heavy”).
Words from the same roots
Etymology from Wiktionary, CC BY-SA 4.0.