The Old Norse word sofa
Word sofa
s o f a
Meaning to sleep
See also Hittite: šu-up- ‘to sleep’

Other words that might be of interest
and ‘spirit, soul’, bein ‘bone, legs’, armr ‘arm’, magi ‘belly, stomach’, blóð ‘blood’, andlauss ‘breathless, lifeless’, eyra ‘ear’, egg ‘egg’, auga ‘eye’, fjøðr ‘feather’, hold ‘flesh’, fótr ‘foot’, hár ‘hair’, hønd ‘hand’, høfuð ‘head’, hjarta ‘heart’, horn ‘horn’, kné ‘knee’, lifr ‘liver’, kjøt ‘meat, flesh’, munni ‘mouth, opening’, hals ‘neck’, nøs ‘nostril, nose’, skinn ‘skin, fur’, hali ‘tail’, bita ‘to cut into bits, to bite’, deyða ‘to kill’, tunga ‘tongue’, tønn ‘tooth’, spor ‘track, footprint’, vømb ‘womb’