"Mjök" и "mikel" однокоренные слова?
Разумеется. «*mekila- adj. 'large, great; much' - Go. mikils adj. 'id.', ON mikill adj. 'id.',
Far. mikil adj. 'id.', Elfd. mikkel adj. 'id.', OE mice/ adj. 'id.', OS mikil adj. 'id.',
MDu. mekel adj. 'id.', OHG mihhil adj. 'id.', MHG michel adj. 'id.' => *meg-e/
(IE) - Hitt. mekk- adj. 'much, many, numerous', ToA mak, ToB maka
adv./indecl. adj. 'much', Gr. µfym; adj. 'great, big, large', Arm. mec adj. 'great,
big, large', adv. 'much', Alb. madh adj. 'big' < *meg-h2-; Lat magnus adj.
'great, big, large' < *mg-no- (with schwa secundum); Mir. maige adj. 'great' <
*meg-io- (with the regular change oflrish -eg- to -ag-).
Unlike the other IE languages, Germanic added a suffix *-ila- ( < *-eli-?) to
the root *meg-. It is unclear whether this happened on the basis of analogy
with *litila- 'small' ( q.v.) or vice versa, but the suffixation has a clear parallel
in Gr. µfya. f. µey<XAri adj. 'great, big, large' and the semantically comparable Lith. dide/is (beside didis) adj. 'big'.»