The Proto-Indo-European word *meĝ-
Word *meĝ-
Meaning great
See also Phrygian: ΜΕΚΑ ‘great’
Cypriot Syllabic Script: me-ka ‘great, important’
Thracian: mer- ‘large, great’
Greek: μέγα ‘great’
Greek: μέγας ‘great’
Armenian: mec ‘great’
Early Proto-Albanian: *madza ‘big, large’
Synonyms *meĝha-

Comments
Gk. megas, Lat. magnus, Arm. mec/medz, Illyr. mag, Gaul. Magiorīx, Alb. madh, Skr. mahayati, Toch. māk/mākā, Goth. mikils, Phryg. meka-, Eng. micil/much, ON mikill, Av. mazant, Pers. /meh, Hitt. makkes, Ir. mochtae/, Welsh Maclgwn, Gm. mihhil/-- Kurd. mezin

Other words that might be of interest
*mel- ‘strong, big’, *pau- ‘small’, *dluh₂gʰó- ‘long’, *mei- ‘small’, *ténus ‘long, thin’, *were- ‘wide, broad’, *ānos ‘circle, ring’, *dl̥h₁ghós ‘long’, *dlonghos ‘long’, *h₃érbʰis ‘circle, orb’, *wérhₓus ‘broad, wide’, *mak- ‘long, thin’, *pau- ‘little, few’, *makrós ‘thin, long’, *pl̥th₂ú- ‘wide, broad’, *seh₁ros ‘long’