Proto-IE: *kak- (IndoIr. *k'-)
Meaning: to help, to reach
Old Indian: śaknoti, ptc. śaktá- `to be powerfule, able'; śáktí- f. `power, might', śakrá- `strong, mighty', śagmá- `id. or helpful'; śacī f. `rendering of help, assistance, Hilfe', śā́ka- m. `power, might, help', śāká- m. `helpful, helper'; śā́kman- n. `power, help', śākvará- `mighty, powerful, strong'
Slavic: *kāčītī (> Bulg кача, качвам 'erheben, den Preis steigern, hängen', Skr ókačiti 'anstreifen', zákačiti 'anhaken')
Germanic: *xag-á- adj., *xag-á- m., *xag-á- vb., *xag-ṓ- vb., *xōg-á- adj., *xōg-í- adj., *xax-t-u- c.
Russ. meaning: помогать etc.
Comments: Cf. also: Av čagǝd- (mit rafǝδrǝm) `Hilfe gewährend', čagǝman- n. `Geschenk', čagvah- `bietend, gewährend'
